Genetics - Pedigree Chart
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Created at 02 / 2015
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Genetics
Essentials
Pedigree chart
A pedigree chart is a diagram that shows the occurrence and appearance or phenotypes of a particular gene or organism and its ancestors from one generation to the next. Pedigrees use a standardized set of symbols, squares represent males and circles represent females. If the sex of the person is unknown a diamond is used. Someone with the phenotype in question is represented by a filled-in (darker) symbol. Heterozygotes, when identifiable, are indicated by a shade dot inside a symbol or a half-filled symbol.
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