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For example, the Book of Genesis discusses the marriage of Abraham and Sarah without criticizing the fact that they were half-siblings, [2] and the Book of Samuel treats the marriage of a royal prince to his half-sister as simply unusual, rather than wicked.
Consanguine marriage is marriage between individuals who are closely related. Though it may involve incest, it implies more than the sexual nature of incest.In a clinical sense, marriage between two family members who are second cousins or closer qualifies as consanguineous marriage.
Inbreeding is also used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
Inbreeding avoidance – Evolutionary biology concept of prevention of negative inbreeding effects; Inbreeding depression – Reduced fitness as a result of inbreeding; Incest – Sexual activity between immediate family members or people considered too closely related to marry; Incest taboo – Cultural rule that prohibits incest
The Bible lists several types of relationship which it regards as incestuous unions; one list appears in the Deuteronomic Code, and two lists occur in the Holiness Code of Leviticus. These lists only mention relationships with female relatives; excluding lesbianism , which implies that the list is addressed to men.
The coefficient of relationship is a measure of the degree of consanguinity (or biological relationship) between two individuals. The term coefficient of relationship was defined by Sewall Wright in 1922, and was derived from his definition of the coefficient of inbreeding of 1921.
and is the coefficient of inbreeding of the common ancestor of X's parents. To give an example, consider the following pedigree. G is the progeny of C and F, and C is the biological uncle of F. In this pedigree chart, G is the progeny of C and F, and C is the biological uncle of F.
Endogamy is the cultural practice of mating within a specific social group, religious denomination, caste, or ethnic group, rejecting any from outside of the group or belief structure as unsuitable for marriage or other close personal relationships.