degree of kindred
Definition: degree of kindred between two members of a pedigree, the minimum number of steps to be traced in going from the one to the other. First degree relatives are sibs, parents, and progeny; second degree are uncles, aunts, nephews, and nieces and so forth. The term is defined for legal purposes, consanguineous marriages, and may be misleading in genetics. The use of groups constituted by lumping together “first degree relatives” regardless of sex or the mode of inheritance in question should be avoided as it fails to distinguish progeny from siblings.