Genetics - Pedigree Chart

1 Min
Created at 02 / 2015
9.6   Informative
8.7   Entertaining
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By Teacher's Pet
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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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