Meanings
no pluralthe identity i.e. identicalness of two of one's ancestors (for example, if one's maternal great-grandfather is the same person as one's paternal great-grandfather), which constitutes or causes pedigree collapse
no pluralthe identity i.e. identicalness of two of one's ancestors (for example, if one's maternal great-grandfather is the same person as one's paternal great-grandfather), which constitutes or causes pedigree collapse