Here the propositus is Child 2 in Generation II
|
| 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 |
 Genetic Symbols
| Chart 1-1 |