Parent

A parent is either the progenitor of a child or, in humans, it can refer to a caregiver or legal guardian, generally called an adoptive parent or step-parent. Parents who are progenitors are first-degree relatives and have 50% genetic meet. A female can also become a parent through surrogacy. Some parents may be adoptive parents, who nurture and raise an offspring, but are not related to the child. Orphans without adoptive parents can be raised by their grandparents or other family members.

A parent can also be elaborated as an ancestor removed one generation. With recent medical advances, it is possible to have more than two biological parents. Examples of third biological parents include instances involving surrogacy or a third person who has provided DNA samples during an assisted reproductive procedure that has altered the recipients' genetic material.

The most common types of parents are mothers, fathers, step-parents, and grandparents. A mother is "a woman in relation to a child or children to whom she has given birth." The extent to which it is socially acceptable for a parent to be involved in their offspring's life varies from culture to culture, however one that exhibits too little involvement is sometimes said to exhibit child neglect, while one that is too involved is sometimes said to be overprotective, cosseting, nosey, or intrusive.

A person's biological parents are the persons from whom the individual inherits their genes. The term is generally only used if there is a need to distinguish an individual's foster parents from their biological parents, For example, an individual whose father has remarried may call the father's new wife their stepmother and continue to refer to their mother normally, though someone who has had little or no contact with their biological mother may address their foster parent as their mother, and their biological mother as such, or perhaps by her first name. ^{[citation needed]}

A mother is a female who has a maternal connection with another individual, whether arising from conception, by giving birth to, or raising the individual in the role of a parent. More than one female may have such connections with an individual. Because of the complexity and differences of a mother's social, cultural, and religious definitions and roles, it is challenging to define a mother to suit a universally accepted definition. The utilization of a surrogate mother may result in explication of there being two biological mothers.

A father is a male parent of any type of offspring. It may be the person who shares in the raising of a child or who has provided the biological material, the sperm, which results in the birth of the child.

Grandparents are the parents of a person's own parent, whether that be a father or a mother. Every sexually reproducing creature who is not a genetic chimera has a maximum of four genetic grandparents, eight genetic great-grandparents, sixteen genetic great-great-grandparents and so on. Rarely, such as in the case of sibling or half-sibling incest, these numbers are lower.

A paternity test is conducted to prove paternity, that is, whether a male is the biological father of another individual. This may be relevant in view of rights and duties of the father. Similarly, a maternity test can be carried out. This is less common, because at least during childbirth and pregnancy, except in the case of a pregnancy involving embryo transfer or egg donation, it is obvious who the mother is. However, it is used in a number of events such as legal battles where a person's maternity is challenged, where the mother is uncertain because she has not seen her child for an extended period of time, or where deceased persons need to be identified.