consanguinity


con·san·guin·i·ty

noun \-ˈgwi-nə-tē\
plural con·san·guin·i·ties

Definition of CONSANGUINITY

1
:  the quality or state of being consanguineous
2
:  a close relation or connection

First Known Use of CONSANGUINITY

14th century

consanguinity

noun    (Concise Encyclopedia)

Kinship characterized by the sharing of common ancestors (derived from the Latin consanguineous, meaning “of common blood”). Kin are of two basic kinds: consanguineous (sharing common ancestors) and affinal (related by marriage). Today consanguinity is a genetic concept that influences the probabilities of specific combinations of characteristics, called genotypes. The probability that two consanguineous individuals will share the same traits depends upon the mode of inheritance (dominant or recessive) and the degree of penetrance or expressivity of the causative gene. Higher rates of mortality and rare diseases and disorders are more common in the offspring of consanguineous unions. While consanguineous marriages of various degrees have been practiced, all societies have incest taboos prohibiting marriage or sexual relations between certain kin.

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