![]() | Male | ![]() | Heterozygotes for autosomal recessive |
![]() | Female | ![]() | Carrier of X-linked recessive |
![]() | Mating | ![]() | Death |
![]() | Parents and Children: 1 boy, 1 girl (in order of birth) | ![]() | Abortion or stillbirth (sex unspecified) |
![]() | Proposita | ||
![]() | Propositus | ||
![]() | Dizygotic Twins | ![]() | Method of identifying persons in a pedigree Here the propositus is Child 2 in Generation II |
![]() | Monozygotic Twins | ||
![]() | Sex unspecified | ![]() | Consanguineous marriage |
![]() | Number of children of sex indicated | ![]() | Divorced |
![]() | Affected individuals | ![]() | Multiple marriages |
![]() | Adopted | ![]() | Extramarital union |
![]() | Chart 1-1 |