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Haplogroup E-M215
Haplogroup E-M215
Haplogroup E-M215
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Haplogroup
  • E-M215
  • E1b1b
Geographic distribution of the haplogroup E1b1b
Possible time of origin47,500—22,400 BP[1][2][3]
Coalescence age34,800 BP[4]
Possible place of originEast Africa[5][1]
AncestorE-P2
Descendants
Defining mutationsM215

E-M215 or E1b1b, formerly known as E3b, is a major human Y-chromosome DNA haplogroup. E-M215 has two basal branches, E-M35 and E-M281. E-M35 is primarily distributed in North Africa and the Horn of Africa, and occurs at moderate frequencies in the Middle East, Europe, and Southern Africa. E-M281 occurs at a low frequency in Ethiopia.

Origins

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The origins of E-M215 were dated by Cruciani in 2007 to about 22,400 years ago in East Africa.[3][Note 1]

E1b1b1 origins map
E1b1b1 origins map

Ancient DNA

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According to Lazaridis et al. (2016), Natufian skeletal remains from the ancient Levant predominantly carried the Y-DNA haplogroup E1b1b. Of the five Natufian specimens analyzed for paternal lineages, three belonged to the E1b1b1b2(xE1b1b1b2a, E1b1b1b2b), E1b1(xE1b1a1, E1b1b1b1) and E1b1b1b2(xE1b1b1b2a, E1b1b1b2b) subclades (60%). Haplogroup E1b1b was also found at moderate frequencies among fossils from the ensuing Pre-Pottery Neolithic B culture, with the E1b1b1 and E1b1b1b2(xE1b1b1b2a, E1b1b1b2b) subclades observed in two of seven PPNB specimens (~29%). The scientists suggest that the Levantine early farmers may have spread southward into East Africa, bringing along Western Eurasian and Basal Eurasian ancestral components separate from that which would arrive later in North Africa.

Additionally, haplogroup E1b1b1 has been found in an ancient Egyptian mummy excavated at the Abusir el-Meleq archaeological site in Middle Egypt, which dates from a period between the late New Kingdom and the Roman era.[6] Fossils at the Iberomaurusian site of Ifri N'Amr Ou Moussa in Morocco, which have been dated to around 5,000 BCE, also carried haplotypes related to the E1b1b1b1a (E-M81) subclade. These ancient individuals bore an autochthonous Maghrebi genomic component that peaks among modern North Africans, indicating that they were ancestral to populations in the area.[7] The E1b1b haplogroup has likewise been observed in ancient Guanche fossils excavated in Gran Canaria and Tenerife on the Canary Islands, which have been radiocarbon-dated to between the 7th and 11th centuries CE. The clade-bearing individuals that were analysed for paternal DNA were inhumed at the Tenerife site, with all of these specimens found to belong to the E1b1b1b1a1 or E-M183 subclade (3/3; 100%).[8]

Loosdrecht et al. (2018) analysed genome-wide data from seven ancient Iberomaurusian individuals from the Grotte des Pigeons near Taforalt in eastern Morocco. The fossils were directly dated to between 15,100 and 13,900 calibrated years before present. The scientists found that five male specimens with sufficient nuclear DNA preservation belonged to the E1b1b1a1 (M78) subclade, with one skeleton bearing the E1b1b1a1b1 parent lineage to E-V13, another male specimen belonged to E1b1b (M215*).[9] Martiniano et al. (2022) later reassigned all the Taforalt samples to haplogroup E-M78 and none to E-L618, the predecessor to E-V13.[10]

Distribution

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In Africa, E-M215 is distributed in highest frequencies in the Horn of Africa and North Africa, specifically in the countries Somalia and Morocco, whence it has in recent millennia expanded as far south as South Africa, and northwards into Western Asia and Europe (especially the Mediterranean and the Balkans).[11][12][13][14] E-M281 has been found in Ethiopia.[12]

Almost all E-M215 men are also in E-M35. In 2004, M215 was found to be older than M35 when individuals were found who have the M215 mutation, but do not have M35 mutation.[11] In 2013, Di Cristofaro et al. (2013) found one individual in Khorasan, North-East Iran to be positive for M215 but negative for M35.[15]

E-M215 and E-M35 are quite common among Afroasiatic speakers. The linguistic group and carriers of E-M35 lineage have a high probability to have arisen and dispersed together from the Afroasiatic Urheimat.[16] Amongst populations with an Afro-Asiatic speaking history, a significant proportion of Jewish male lineages are E-M35.[17] Haplogroup E-M35, which accounts for approximately 18%[12] to 20%[18][19] of Ashkenazi and 8.6%[20] to 30%[12] of Sephardi Y-chromosomes, appears to be one of the major founding lineages of the Jewish population.[21][Note 2]

E-M215 association with endurance

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Moran et al. (2004) observed that among Y-DNA (paternal) clades borne by elite endurance athletes in Ethiopia, the haplogroup E3b1 was negatively correlated with elite athletic endurance performance,[22] whereas the haplogroups E*, E3*, K*(xP),[22] and J*(xJ2) were significantly more frequent among the elite endurance athletes.[22]

Subclades

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E-M35

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Main article: Haplogroup E-M35

Haplogroup E-M35 is a subclade of E-M215.

E-M281

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Main article: Haplogroup E-M281

Haplogroup E-M281 is a subclade of E-M215.

Phylogenetics

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Phylogenetic history

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Main article: Conversion table for Y chromosome haplogroups

Prior to 2002, there were in academic literature at least seven naming systems for the Y-Chromosome phylogenetic tree. This led to considerable confusion. In 2002, the major research groups came together and formed the Y-Chromosome Consortium (YCC). They published a joint paper that created a single new tree that all agreed to use. Later, a group of citizen scientists with an interest in population genetics and genetic genealogy formed a working group to create an amateur tree aiming at being above all timely. The table below brings together all of these works at the point of the landmark 2002 YCC Tree. This allows a researcher reviewing older published literature to quickly move between nomenclatures.

YCC 2002/2008 (Shorthand) (α) (β) (γ) (δ) (ε) (ζ) (η) YCC 2002 (Longhand) YCC 2005 (Longhand) YCC 2008 (Longhand) YCC 2010r (Longhand) ISOGG 2006 ISOGG 2007 ISOGG 2008 ISOGG 2009 ISOGG 2010 ISOGG 2011 ISOGG 2012
E-P29 21 III 3A 13 Eu3 H2 B E* E E E E E E E E E E
E-M33 21 III 3A 13 Eu3 H2 B E1* E1 E1a E1a E1 E1 E1a E1a E1a E1a E1a
E-M44 21 III 3A 13 Eu3 H2 B E1a E1a E1a1 E1a1 E1a E1a E1a1 E1a1 E1a1 E1a1 E1a1
E-M75 21 III 3A 13 Eu3 H2 B E2a E2 E2 E2 E2 E2 E2 E2 E2 E2 E2
E-M54 21 III 3A 13 Eu3 H2 B E2b E2b E2b E2b1 - - - - - - -
E-P2 25 III 4 14 Eu3 H2 B E3* E3 E1b E1b1 E3 E3 E1b1 E1b1 E1b1 E1b1 E1b1
E-M2 8 III 5 15 Eu2 H2 B E3a* E3a E1b1 E1b1a E3a E3a E1b1a E1b1a E1b1a E1b1a1 E1b1a1
E-M58 8 III 5 15 Eu2 H2 B E3a1 E3a1 E1b1a1 E1b1a1 E3a1 E3a1 E1b1a1 E1b1a1 E1b1a1 E1b1a1a1a E1b1a1a1a
E-M116.2 8 III 5 15 Eu2 H2 B E3a2 E3a2 E1b1a2 E1b1a2 E3a2 E3a2 E1b1a2 E1b1a2 E1ba12 removed removed
E-M149 8 III 5 15 Eu2 H2 B E3a3 E3a3 E1b1a3 E1b1a3 E3a3 E3a3 E1b1a3 E1b1a3 E1b1a3 E1b1a1a1c E1b1a1a1c
E-M154 8 III 5 15 Eu2 H2 B E3a4 E3a4 E1b1a4 E1b1a4 E3a4 E3a4 E1b1a4 E1b1a4 E1b1a4 E1b1a1a1g1c E1b1a1a1g1c
E-M155 8 III 5 15 Eu2 H2 B E3a5 E3a5 E1b1a5 E1b1a5 E3a5 E3a5 E1b1a5 E1b1a5 E1b1a5 E1b1a1a1d E1b1a1a1d
E-M10 8 III 5 15 Eu2 H2 B E3a6 E3a6 E1b1a6 E1b1a6 E3a6 E3a6 E1b1a6 E1b1a6 E1b1a6 E1b1a1a1e E1b1a1a1e
E-M35 25 III 4 14 Eu4 H2 B E3b* E3b E1b1b1 E1b1b1 E3b1 E3b1 E1b1b1 E1b1b1 E1b1b1 removed removed
E-M78 25 III 4 14 Eu4 H2 B E3b1* E3b1 E1b1b1a E1b1b1a1 E3b1a E3b1a E1b1b1a E1b1b1a E1b1b1a E1b1b1a1 E1b1b1a1
E-M148 25 III 4 14 Eu4 H2 B E3b1a E3b1a E1b1b1a3a E1b1b1a1c1 E3b1a3a E3b1a3a E1b1b1a3a E1b1b1a3a E1b1b1a3a E1b1b1a1c1 E1b1b1a1c1
E-M81 25 III 4 14 Eu4 H2 B E3b2* E3b2 E1b1b1b E1b1b1b1 E3b1b E3b1b E1b1b1b E1b1b1b E1b1b1b E1b1b1b1 E1b1b1b1a
E-M107 25 III 4 14 Eu4 H2 B E3b2a E3b2a E1b1b1b1 E1b1b1b1a E3b1b1 E3b1b1 E1b1b1b1 E1b1b1b1 E1b1b1b1 E1b1b1b1a E1b1b1b1a1
E-M165 25 III 4 14 Eu4 H2 B E3b2b E3b2b E1b1b1b2 E1b1b1b1b1 E3b1b2 E3b1b2 E1b1b1b2a E1b1b1b2a E1b1b1b2a E1b1b1b2a E1b1b1b1a2a
E-M123 25 III 4 14 Eu4 H2 B E3b3* E3b3 E1b1b1c E1b1b1c E3b1c E3b1c E1b1b1c E1b1b1c E1b1b1c E1b1b1c E1b1b1b2a
E-M34 25 III 4 14 Eu4 H2 B E3b3a* E3b3a E1b1b1c1 E1b1b1c1 E3b1c1 E3b1c1 E1b1b1c1 E1b1b1c1 E1b1b1c1 E1b1b1c1 E1b1b1b2a1
E-M136 25 III 4 14 Eu4 H2 B E3ba1 E3b3a1 E1b1b1c1a E1b1b1c1a1 E3b1c1a E3b1c1a E1b1b1c1a1 E1b1b1c1a1 E1b1b1c1a1 E1b1b1c1a1 E1b1b1b2a1a1

Research publications

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The following research teams per their publications were represented in the creation of the YCC Tree.

Discussion

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E-M215 and E1b1b1 are the currently accepted names found in the proposals of the Y Chromosome Consortium (YCC), for the clades defined by mutation M215 and M35 respectively, which can also be referred to as E-M215 and E-M35.[23] The nomenclature E3b (E-M215) and E3b1 (E-M35) respectively were the YCC defined names used to designate the same haplogroups in older literature with E-M35 branching as a separate subclade of E-M215 in 2004.[11] Prior to 2002 these haplogroups were not designated in a consistent way, and nor was their relationship to other related clades within haplogroup E and haplogroup DE. But in non-standard or older terminologies, E-M215 is for example approximately the same as "haplotype V", still used in publications such as Gérard et al. (2006).[24]

Phylogenetic trees

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Cladogram with the main subclades:

E1b1b (M215)

The following phylogenetic tree is based on the YCC 2008 tree and subsequent published research as summarized by ISOGG. It includes all known subclades as of June 2015 (Trombetta et al. 2015)[25][23][24]

  • E-M215 (E1b1b)
    • E-M215*. Rare or non-existent.
    • E-M35 (E1b1b1)
      • E-V68 (E1b1b1a)
        • E-V2009. Found in individuals in Sardinia and Morocco.
        • E-M78 (E1b1b1a1). North Africa, Horn of Africa, West Asia, Sicily. (Formerly "E1b1b1a".)
          • E-M78*
          • E-V1477. Found in Tunisian Jews.
          • E-V1083.
            • E-V1083*. Found only in Eritrea (1.1%) and Sardinia (0.3%).
            • E-V13
            • E-V22
          • E-V1129
            • E-V12
              • E-V12*
              • E-V32
            • E-V264
              • E-V259. Found in North Cameroon.
              • E-V65
                • E-CTS194
      • E-Z827 (E1b1b1b)[26]
        • E-V257/L19 (L19, V257) – E1b1b1b1[26]
          • E-PF2431
          • E-M81 (M81)
            • E-PF2546
              • E-PF2546*
              • E-CTS12227
                • E-MZ11
                  • E-MZ12
              • E-A929
                • E-Z5009
                  • E-Z5009*
                  • E-Z5010
                  • E-Z5013
                    • E-Z5013*
                    • E-A1152
                • E-A2227
                  • E-A428
                  • E-MZ16
                • E-PF6794
                  • E-PF6794*
                  • E-PF6789
                    • E-MZ21
                    • E-MZ23
                    • E-MZ80
                • E-A930
                • E-Z2198/E-MZ46
                  • E-A601
                  • E-L351
        • E-Z830 (Z830) – E1b1b1b2[26]
          • E-M123 (M123)
            • E-M34 (M34)
              • E-M84 (M84)
                • E-M136 (M136)
              • E-M290 (M290)
              • E-V23 (V23)
              • E-L791 (L791,L792)
          • E-V1515. E-V1515 and its subclades are mainly restricted to eastern Africa.
            • E-V1515*
            • E-V1486
              • E-V1486*
              • E-V2881
                • E-V2881*
                • E-V1792
                • E-V92
              • E-M293 (M293)
                • E-M293*
                • E-P72 (P72)
                • E-V3065*
            • E-V1700
              • E-V42 (V42)
              • E-V1785
                • E-V1785*
                • E-V6 (V6)
      • E-V16/E-M281 (E1b1b2). Rare. Found in individuals in Ethiopia, Yemen and Saudi Arabia.

See also

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Wikiquote has quotations related to Haplogroup E-M215.

Genetics

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Y-DNA E subclades

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Y-DNA backbone tree

[edit]

Notes

[edit]

References

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Bibliography

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Haplogroup E-M215

View on Grokipedia
from Grokipedia
Haplogroup E-M215, also designated as E1b1b in the nomenclature of the International Society of , is a major human Y-chromosome DNA defined by the M215 (SNP). It represents one of the principal lineages within the broader E, which is characterized by mutations such as SRY4064, M96, P29, and the YAP+ Alu insertion, and is predominantly associated with populations of African and Mediterranean descent. Originating in eastern approximately 33,000–35,000 years ago, E-M215 has two basal branches—E-M35 and E-M281—and is notable for its role in multiple ancient migrations that shaped across , the , and southern . The E-M35 subclade, which encompasses the majority of E-M215 diversity, is estimated to have arisen around 23,000 years ago and exhibits high frequencies in (up to 80% in some Berber groups via E-M81) and the , with notable subclades like E-M78 (common in and the ) and E-V13 (linked to expansions). In contrast, the rarer E-M281 branch shows limited distribution, primarily in the and the . Phylogeographic studies reveal that E-M215's spread involved dispersals from eastern Africa northward around 14,000–23,000 years ago, followed by westward movements into the and trans-Mediterranean gene flow into Iberia and the during the and later periods, such as the Islamic era. E-M215 is implicated in key demographic events, including the origins of in the (dated to approximately 8,000–10,000 years ago) and potential linguistic correlations with Afro-Asiatic language expansions across the and into . Its presence in modern populations underscores historical connectivity between and , with frequencies exceeding 20% in Ethiopian and Somali groups, 10–30% in southern European countries like and , and 10–20% in the and 15–25% in Ashkenazi Jewish communities. Recent refinements to its phylogeny, incorporating additional SNPs like V68 and V257, highlight a genetic bridge between North African and southern European lineages, emphasizing ongoing research into its complex evolutionary history as of 2025.

Nomenclature and Overview

Definition and Characteristics

Haplogroup E-M215, also known as E1b1b and formerly designated as E3b, is a major defined by the (SNP) M215. This represents a primary branch of the larger Haplogroup E (defined by mutations such as M96), specifically under the E1b1 (E-P2) . E-M215 diverges into two basal s: E-M35 and the rarer E-M281. Within the broader human Y-DNA , Haplogroup E-M215 falls under the macrohaplogroup DE (defined by M145), which encompasses the major African and Asian Y-chromosome lineages. As a Y-chromosome haplogroup, E-M215 is characterized by its basis in SNPs located on the non-recombining region of the , which undergoes no during and is transmitted exclusively from father to son in a patrilineal manner. This inheritance pattern enables E-M215 and other Y-DNA haplogroups to serve as reliable markers for tracing deep paternal ancestry and reconstructing historical male-mediated population migrations across continents.

Historical Classification

The historical classification of traces back to the early development of Y-chromosome in the mid-1990s. In their seminal review, Jobling and Tyler-Smith (1995) proposed a letter-based system for major Y-s, designating the lineage now known as E-M215 as part of , based on initial binary polymorphisms like the 12f2 marker associated with African populations. This reflected the limited resolution of early genetic markers, which grouped diverse African Y-lineages under broad categories without distinguishing finer subclades. Subsequent studies refined this classification amid growing phylogenetic detail. Hammer et al. (1998) provided one of the first identifications of key markers within haplogroup E through nested cladistic , highlighting its deep African roots but still using the designation for the broader encompassing what would later be split. By , Underhill et al. introduced the E3b to specifically denote the defined by the , distinguishing it from E3a (now E1b1a or E-M2), which predominates in ; this separation addressed early confusions in distribution patterns, as E3b was linked more to and the . Cruciani et al. (2002) further solidified this by confirming M215 as the defining for E3b through high-resolution , resolving ambiguities in marker stability and supporting its role in Eurasian back-migrations. The nomenclature underwent a major shift in the late 2000s as phylogenetic trees became more hierarchical. Following the Consortium's 2002 standardization, which emphasized mutation-based naming, the International Society of Genetic Genealogy (ISOGG) updated its tree in 2008 to reclassify E3b as E1b1b, placing it under the E1b1 paragroup to better reflect its position relative to E1b1a (E-M2) and other basal E branches; this change incorporated refined SNP data and avoided the alphabetical limitations of earlier systems. The ISOGG nomenclature for E-M215 as E1b1b has remained consistent in subsequent updates through 2020, with focus shifting to finer resolutions. Early controversies, such as overlaps in geographic signals between E3a and E3b leading to debates on single versus multiple African origins, were largely clarified by these updates, emphasizing distinct evolutionary trajectories within the broader haplogroup E.

Origins and Age Estimates

Proposed Geographic Origin

Haplogroup E-M215, a major of the African macrohaplogroup E-P2, is widely accepted to have originated in , with the highest probability placing its emergence in the or based on phylogeographic analyses of Y-chromosome diversity. This consensus arises from Bayesian modeling of SNP data across thousands of samples, which assigns a of 0.97 to an eastern African origin for the clade's diversity. Supporting this, the greatest basal diversity of E-M215 lineages, including rare paragroups like E-M215*, is observed in Ethiopian and Eritrean populations, where frequencies of deep-rooting branches exceed those in or the . These patterns link E-M215 to the broader diversification of modern human Y-chromosomes in during early population expansions across the continent. Earlier studies, such as Semino et al. (2004), debated possible North African or Levantine origins for certain E-M215 subclades like E-M78 or E-M123, inferring back-migrations from based on limited data and distributions in Mediterranean populations. However, subsequent high-resolution and diversity metrics have refuted these hypotheses, demonstrating that the root of E-M215 lies in rather than a secondary Eurasian center, with North African clades like E-M81 representing later regional adaptations. Cruciani et al. (2004) further solidified the East African homeland through network analyses showing elevated variance and ancient lineages in sub-Saharan contexts. The evolutionary context of E-M215 aligns with Pleistocene environmental shifts in , including fluctuating climates that facilitated human adaptations to diverse habitats from savannas to highlands. This period coincides with the haplogroup's emergence around the , potentially tying it to early pastoralist innovations, as evidenced by correlations between E-M215 subclades and Afro-Asiatic-speaking groups practicing animal herding in the . Such associations suggest that carriers of E-M215 contributed to cultural dispersals linked to Neolithic transitions in the region.

Temporal Estimates and Methods

The time to the (TMRCA) for Haplogroup E-M215 has been estimated at approximately 34,600 years (ybp) based on (SNP) counting calibrated against and modern genomes in the YFull YTree database. Similarly, FamilyTreeDNA's Discover tool, drawing from extensive testing data, places the TMRCA around 35,000 ybp (33,000 BCE, with a 95% of 37,934–28,704 BCE). An earlier estimate from Cruciani et al. (2004), using (STR) variance in 509 E-M215 chromosomes, yielded a TMRCA of 25,600 ybp (95% CI: 24,300–27,400 ybp). These age estimates are derived primarily through Y-chromosome short (STR) rates, which measure via the squared difference (ASD) or rho statistic from the founder , and SNP-based methods that count substitutions along phylogenetic branches calibrated to a . Whole-genome sequencing enhances precision by integrating SNP data with STRs, while Bayesian coalescent models, such as those implemented in BATWING software, account for population size fluctuations and generate posterior distributions of coalescence times using sampling on SNP and STR datasets. These approaches prioritize evolutionary rates over pedigree-based ones to better reflect long-term Y-chromosome dynamics. Recent refinements have incorporated for clock calibration, reducing uncertainties by anchoring phylogenies to dated archaeological samples; for instance, Lazaridis et al. (2016) provided genomic data from ancient Near Eastern individuals, including E-M215 carriers, that helps validate Y-haplogroup divergence times against historical timelines. Discrepancies persist between SNP-based clocks, which tend to yield older estimates due to their stability, and STR-based clocks, which can inflate ages from higher apparent rates influenced by multiple hits. Key factors affecting these estimates include back-mutation rates in loci, where reversals to ancestral states can underestimate coalescence times if not modeled stepwise, and sampling biases in African populations, where underrepresentation of diverse lineages may skew variance calculations toward younger apparent ages.

Phylogenetic Structure

Basal Branches

Haplogroup E-M215 is primarily divided into two basal branches: E-M35, which accounts for nearly all (>99%) of E-M215 lineages, and E-M281, an extremely rare comprising less than 1% of the total. These branches represent the immediate phylogenetic structure downstream of the E-M215 defining , with E-M35 dominating modern distributions and E-M281 showing more restricted occurrence. E-M35 is defined by the M35 (also known as P64) and further subdivides into major lineages such as E-V68 (including E-M78) and E-Z827 (including E-M123 and E-M81), among others. This branch is strongly associated with historical expansions originating in , followed by significant dispersals into and across the Mediterranean region, likely linked to migrations and the spread of Afro-Asiatic languages. In contrast, E-M281 (also known as E-V16) is characterized by the M281 mutation and observed at low frequencies primarily in the and the . As of 2025, YFull estimates the TMRCA of E-V16 at 4,100 years , with documented carriers mainly from , , , and . This lineage shows evidence of broader dispersal beyond , including across the region. The paragroup E-M215*, consisting of lineages that do not carry the defining mutations of E-M35 or E-M281, is exceedingly rare and may represent unsampled or extinct basal branches within the haplogroup. Modern surveys have identified few or no such chromosomes, underscoring the completeness of resolution for the primary divisions.

Phylogenetic Trees and Updates

The phylogenetic structure of Haplogroup E-M215 is commonly represented in standardized trees maintained by organizations. In the International Society of Genetic Genealogy (ISOGG) Y-DNA tree (version 2023), E-M215 is positioned as a primary under the broader E-P2 lineage, with its two main basal branches being E-M35 (further ramifying into E-V68, E-M78, and E-M81, among others) and the less common E-M281 (also known as E-V16). This tree structure relies on a curated set of single polymorphisms (SNPs) to delineate evolutionary relationships, emphasizing E-M35 as the dominant branch leading to widespread s such as E-V13 (under E-M78). Recent updates have refined this phylogeny through high-throughput sequencing data. The YFull YTree database (as of early 2025) estimates E-M215 formation at approximately 41,200 years (ybp) and its time to (TMRCA) at 34,600 ybp, incorporating over 90 defining SNPs and expanding subclades with novel variants such as E-Y338012 and E-FTC43334 added in late 2024. Similarly, FamilyTreeDNA's Big Y-700 testing in 2024 confirmed an ancient split upstream of E-M215, between E-P177 and E-P2 at around 49,000 ybp, based on analysis of a Yemenite lineage sample that revealed 8 upstream and 113 downstream SNPs, including the private variant P75. The historical development of the E-M215 phylogeny has progressed from initial binary marker-based classifications in the early , which used a limited set of SNPs like M215 to define broad haplogroups, to a highly resolved framework today enabled by next-generation sequencing (NGS). Seminal studies, such as the 2008 analysis of new binary polymorphisms, expanded the Y-chromosome from 153 to over 300 haplogroups by integrating hundreds of SNPs, with specific refinements to E-M215 topology emerging in 2010 through short tandem repeat (STR) and SNP correlations that clarified equivalences like V43 and V95 under E-M2. By 2013, unbiased SNP discovery via NGS further deepened the African structure of E lineages, adding chronological depth and resolving basal dichotomies within E-M215. Interactive tools for exploring these trees include the ISOGG online Y-DNA browser, which provides downloadable SNP lists and branch diagrams; YFull's dynamic YTree viewer, updated quarterly with user-submitted NGS data; and FamilyTreeDNA's Discover platform, which integrates results to display personalized placements and ancient correlations without embedding static images.

Major Subclades

E-M35

is defined by the (SNP) mutation M35 on the Y-chromosome and represents the primary and most widespread of the parent E-M215. This lineage encompasses the majority of E-M215 diversity, accounting for its extensive distribution across , , and the . Age estimates for the origin of E-M35, derived from Bayesian phylogenetic analysis of high-coverage sequencing data, place its emergence at approximately 25,000 years (ybp), with a 95% of 20,000–30,000 ybp. This timing positions E-M35 as a relatively ancient branch within E-M215, predating significant post-glacial human expansions. The phylogenetic structure of E-M35 features two main basal branches: E-V68 and E-Z827. Under E-V68 lies E-M78, which is prevalent in and and further branches into E-V13, a associated with Balkan populations. E-Z827 includes E-M81, dominant among Berber groups in , and E-M123, found primarily in the . These downstream subclades highlight E-M35's role in shaping regional genetic profiles through subsequent diversifications. Historically, E-M35 has been associated with expansions, including migrations that facilitated the spread of and from into and surrounding regions. Genetic diversity within E-M35 is notably high in Berber populations of , where multiple subclades such as E-M81 and refined paragroups contribute to elevated variation. Recent studies, including large-scale of over 5,000 samples, have refined the internal structure of E-M35 by resolving polytomies and identifying new clades, such as those under E-V1515, thereby enhancing understanding of its dispersal patterns among pastoralist groups.

E-M281

E-M281 is a rare of human Y-chromosome haplogroup E-M215, defined by the (SNP) M281, a G-to-A transition at position 280 in the Y-chromosome sequence. This lineage was first identified in a study of Ethiopian populations, where it was observed in two individuals from the Oromo ethnic group. Subsequent analyses, including a large-scale survey of over 3,400 males across multiple continents, tested for the M281 marker but detected no carriers, underscoring its extreme rarity outside specific African contexts. The distribution of E-M281 is highly restricted, occurring almost exclusively in Ethiopia among Cushitic-speaking Oromo populations. Its low frequency—limited to just a few documented cases—suggests either a recent expansion from a small founding group or a genetic bottleneck that reduced diversity within the . Age estimates suggest E-M281 diverged from E-M35 approximately 34,000 years ago. This pattern aligns with its association with indigenous East African groups, potentially reflecting localized demographic histories rather than widespread dispersal. As one of the basal branches of E-M215 alongside E-M35, E-M281 represents a distinct lineage that likely remained confined to , contrasting with the broader migratory patterns observed in E-M35. Its presence in Ethiopian samples highlights the deep-rooted diversity of haplogroup E in the , offering insights into pre-Neolithic population structures in the region.

Modern Distribution

Geographic Spread

Haplogroup E-M215 is most prominently distributed in , where it reaches peak frequencies among -speaking populations, such as 80% in the Mozabite of (based on a small sample of N=20). In the , it maintains high prevalence, with representative frequencies of approximately 50% among Somalis and 20-30% in Ethiopian groups like the Oromo and Amhara. These regions represent the core of its modern range, reflecting deep-rooted associations with indigenous African populations. The haplogroup's secondary spread extends to the , particularly the , where frequencies range from 10-20% in populations such as . In , including areas like and , it occurs at moderate levels of 10-20%, often linked to historical across the Mediterranean, with peaks up to 20-32% in the . Traces of E-M215 also appear in the , primarily among populations of African descent, resulting from colonial-era transatlantic migrations. This distribution pattern arises from post-Last Glacial Maximum expansions, with migrations facilitating its dispersal via Mediterranean routes from eastern toward . Subclades such as E-M35 have notably driven much of this broader dissemination. Genetic mapping studies reveal a characteristic cline, with frequencies gradually declining from high levels in to lower incidences in , underscoring these historical movements.

Population Frequencies and Associations

Haplogroup E-M215 displays marked variation in frequency across global populations, with the highest concentrations observed in and the , reflecting its deep roots in these regions. In Algerian Mozabites, a Berber-speaking group, E-M215 reaches 80% (N=20), predominantly through the E-M81 subclade, underscoring its association with indigenous North African lineages. Similar elevated levels are reported in at approximately 42%, where it contributes significantly to the paternal amid diverse historical migrations. In , the frequency stands at about 20%, primarily driven by subclades like E-M78, linking local populations to broader Northeast African patterns. Among Jewish populations, the E-M34 (under E-M35) occurs in Cohanim, suggesting ties to ancient Near Eastern dispersals and the . E-M215 shows strong correlations with Afro-Asiatic language speakers, including Berber, Semitic, and Cushitic groups, where it often exceeds 30-50% and aligns with pastoralist expansions. In contrast, frequencies drop outside , but remain 10-20% in southern European populations due to historical . Recent research highlights ethnic-specific variations, such as higher E-M215 prevalence in Cushitic-speaking groups (e.g., Oromo at ~32%) compared to Nilotic ones (often <10%), reflecting differential Neolithic influences in East Africa. These patterns emphasize E-M215's role as a marker of Afro-Asiatic demographic history without direct ties to specific phenotypic traits.
Population GroupE-M215 Frequency (%)Key Notes
Algerian Mozabites80 (N=20)Predominantly E-M81; Berber isolate.
Libyans~42Reflects North African diversity; includes E-M81 (33.7%) and E-M78 (8%).
Egyptians20Mainly E-M78 in northern samples.
Ethiopians (general)40Higher in Cushitic speakers like Oromo.
Southern Europeans10-20Elevated in Greece, Italy, and Balkans.
Jewish CohanimPresent (E-M34 subclade)Linked to diaspora migrations.

Ancient DNA Evidence

Key Ancient Samples

One of the earliest confirmed instances of Haplogroup E-M215 in ancient DNA comes from the culture at Cave in , where individuals dated to approximately 15,000 years (ybp) were assigned to the E-M78. These samples represent some of the oldest North African forager remains with identifiable Y-chromosome lineages under E-M215. In the , Natufian hunter-gatherers from sites such as Raqefet Cave and Hayonim Cave, dated to around 12,000 ybp, show a prevalence of E-M215, with approximately 60% of analyzed male individuals (3 out of 5) carrying this haplogroup, including basal subclades like E-Z830. This finding highlights E-M215's presence in pre-agricultural Levantine populations. During the period, (PPNB) communities in the exhibited E-M35, a major subclade of E-M215, at a frequency of about 29% (2 out of 7 males) in samples from sites like 'Ain Ghazal in and other regional contexts. Similarly, ancient Egyptian remains from Abusir el-Meleq, spanning the New Kingdom to Roman periods (ca. 1380 BCE to 425 CE), include individuals with E-M78, such as one sample identified as E-V22. Later prehistoric samples include the indigenous Guanches of the , where ancient DNA from pre-European conquest individuals (ca. 3rd–16th centuries CE) frequently carries E-M81, a North African-specific subclade of E-M215, confirming Berber affinities. In the , E-V13 (under E-M78) appears in male burials from sites in present-day and , dated to ca. 2500–2000 BCE, marking its early expansion in southeastern . Recent analyses have identified E-M215 in Iberian prehistoric contexts during the Copper Age transition in the western Mediterranean. Additionally, a 2025 study on from the Green (ca. 13,000–7,000 ybp) reveals new insights into ancestral North African lineages, supporting regional genetic continuity potentially linked to broader E-M215 distributions.

Interpretations of Migrations

Ancient DNA evidence indicates that Haplogroup E-M215 underwent an early expansion from to around 20,000 years before present (ybp), coinciding with the culture. Individuals from the site in , dated to approximately 15,000 ybp, carried the subclade E-M78, suggesting a migration pathway likely along the North African littoral or via inland routes during the . This northward movement is interpreted as part of broader human dispersals following the , with E-M215 lineages adapting to diverse environments while maintaining genetic continuity with sub-Saharan African sources. Subsequent back-migration to the around 12,000 ybp is evidenced by the presence of basal E-M215 lineages in Natufian hunter-gatherers from sites like Raqefet Cave and Hayonim Cave in present-day . These samples, representing one of the earliest sedentary populations in the region, show E-M215 as a predominant Y-chromosome , implying gene flow from into the during the Epipaleolithic period. This event is thought to have facilitated cultural exchanges, including early plant domestication, and underscores E-M215's role in bidirectional African-Eurasian . In the period, E-M35—a major subclade of E-M215—spread into alongside Anatolian farmers migrating westward from approximately 8,000 ybp. Ancient genomes from early farming communities in the and Mediterranean, such as those from the Starčevo-Körös-Criş culture, reveal E-M35 derivatives like E-V13, indicating male-mediated dispersal of agricultural practices and technologies. This expansion contributed to the genetic foundation of southern European populations, blending with local ancestries. Concurrently, in the , the subclade E-M81 emerged prominently with the Capsian culture around 10,000 ybp, as seen in Neolithic samples from sites like Ifri n'Amr ou Moussa, which exhibit Y-chromosomes ancestral to E-M81 and reflect local forager-farmer continuity amid Levantine influences. Recent genomic reassessments, including refined phylogenetic placements of individuals exclusively to E-M78, reinforce a North African cradle for E-M215's diversification around 20,000–25,000 ybp, countering earlier hypotheses of primary Eurasian origins by highlighting deep African roots and minimal backflow from . These findings, drawn from high-coverage , emphasize E-M215's autochthonous development in before its Pleistocene outflows. However, significant gaps persist in the ancient DNA record from prior to 10,000 ybp, where preservation challenges and limited sampling obscure the precise timing and routes of E-M215's initial coalescence and early diversification. This scarcity complicates reconstructions of its pre-Out-of-Africa expansions, leaving reliance on modern phylogeographic models to infer East African origins around 40,000 ybp.

Genetic and Phenotypic Associations

A seminal study by Moran et al. (2004) examined Y-chromosome haplogroups in 62 elite Ethiopian endurance runners and found that 75% carried the E-M35* subclade, compared to 40% in a general Ethiopian population sample of 95 individuals. This overrepresentation was statistically significant (P < 0.05), particularly for marathon and 5-10 km runners, with haplogroup E* (a basal branch of E-M35) detected exclusively among athletes. The findings indicate an associative link between E-M35* and elite-level distance running success in Ethiopians, though direct causality remains unestablished due to the Y-chromosome's limited coding capacity for performance-related traits. Hypotheses for this association propose indirect effects via , where the Y-haplogroup marker correlates with favorable autosomal variants, such as polymorphisms in the ACE gene (associated with levels and cardiovascular efficiency) or ACTN3 gene (influencing fast-twitch muscle fiber composition and oxygen utilization). These autosomal genes have been implicated in endurance phenotypes, potentially enhancing aerobic capacity in populations carrying high frequencies of E-M35 subclades, but the relationship is correlative rather than mechanistic. Subsequent research by Scott et al. (2005) replicated similar patterns in Kenyan endurance athletes, observing elevated frequencies of related E haplogroups (e.g., E-M35 derivatives) compared to non-athlete controls, supporting a broader East African genetic predisposition for distance running. However, both studies faced critiques for modest sample sizes (n < 100 per group), which limit statistical power and raise concerns about population stratification confounding results. In broader context, the E-M215 lineage, particularly its E-M35 , aligns with genetic adaptations to high-altitude environments in , where populations like the Amhara and Oromo exhibit frequencies of 35-63% for E-M35, potentially co-selected with traits favoring oxygen transport and metabolic efficiency under hypoxic conditions.

Other Potential Correlations

Studies have explored potential associations between Haplogroup E-M215 and various outcomes, though evidence remains preliminary and often confounded by population stratification. For instance, research on Y-chromosome variation in has identified nominal protective associations with rare like E1b1b1c in early-stage disease among European-ancestry populations, with an of 0.51 (95% CI: 0.30–0.87, P = 0.012). Similarly, a 2025 analysis of ancestral Y-chromosome disparities in highlighted uncaptured African-specific branches within Haplogroup E, including E-Z1649 and E-M4217, as potentially contributing to treatment resistance and higher mortality in African-ancestry individuals, though direct causation was not established. Regarding neurological conditions, investigations into (MS) susceptibility have noted differential genetic risks influenced by North African , with a 2013 study reporting higher MS risk frequencies in North African-admixed groups, attributing this to HLA-linked variants. Anthropologically, subclade E-M81 shows strong correlations with the persistence of Berber (Amazigh) languages and cultural identity in , where it reaches frequencies exceeding 80% in some groups, reflecting a recent origin around 2,000 years ago tied to autochthonous populations rather than later migrations. This lineage's dominance supports models of genetic continuity among Berber speakers despite historical admixtures. Recent genomic efforts, such as the 2025 Moroccan Genome Project, have sequenced 109 individuals and identified E-M215 (specifically E1b1b1) as the most prevalent Y-haplogroup at 36.6%, alongside variants in genes like SLC30A8 (rs13266634) and IRS2 (rs1805097) associated with risk, a metabolic trait. These findings highlight novel African-enriched variants potentially influencing metabolic pathways, but no strong causal links to diseases were established, emphasizing E-M215's role as a proxy rather than a direct functional driver. Overall, such correlations necessitate caution, as Y-haplogroups serve primarily as ancestry markers; comprehensive genome-wide association studies (GWAS) are essential to disentangle true phenotypic effects from confounding factors.

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