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A cousin is a relative that is the child of a parent's sibling; this is more specifically referred to as a first cousin.. More generally, in the kinship system used in the English-speaking world, a cousin is a type of relationship in which relatives are two or more generations away from their most recent common ancestor.
Globally, the most common form of consanguineous union is between first cousins, in which the spouses share 1 ⁄ 8 of their genes inherited from a common ancestor, and so their progeny are homozygous (or more correctly autozygous) at 1 ⁄ 16 of all loci (r = 0.0625). [27]
First cousins are both the second generation removed from their shared grandparents. Second cousins are the third generation removed from shared great-grandparents. So: cousin plus one is the ...
Third-degree relatives are a segment of the extended family and includes first cousins, great-grandparents and great-grandchildren. [7] Third-degree relatives are generally defined by the expected amount of genetic overlap that exists between two people, with the third-degree relatives of an individual sharing approximately 12.5% of their genes ...
A cousin with minimal removal is a first cousin, i.e. the child of the subjects uncle or aunt. Degrees of collaterality and removals are used to more precisely describe the relationship between cousins.
In Pakistan, where there has been cousin marriage for generations and the current rate may exceed 50%, one study estimated infant mortality at 12.7 percent for married double first cousins, 7.9 percent for first cousins, 9.2 percent for first cousins once removed/double second cousins, 6.9 percent for second cousins, and 5.1 percent among ...
In discussing consanguineal kinship in anthropology, a parallel cousin or ortho-cousin is a cousin from a parent's same-sex sibling, while a cross-cousin is from a parent's opposite-sex sibling. Thus, a parallel cousin is the child of the father's brother (paternal uncle's child) or of the mother's sister (maternal aunt's child), while a cross ...
When you say a relative is a 1st cousin 1x removed, would it not be more specific to say if it was removed up or down a generation. Your parent’s 1st cousin and your 1st cousin’s child are both your 1st cousin 1x removed but are clearly of different generations.