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Pedigrees

Pedigrees. Pedigrees. A pedigree is a diagram of family relationships that uses symbols to represent people and lines to represent genetic relationships. These diagrams make it easier to visualize relationships within families, particularly large extended families.

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Pedigrees

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  1. Pedigrees

  2. Pedigrees • A pedigree is a diagram of family relationships that uses symbols to represent people and lines to represent genetic relationships. • These diagrams make it easier to visualize relationships within families, particularly large extended families. • Pedigrees are often used to determine the mode of inheritance (dominant, recessive, etc.) of genetic diseases.

  3. Pedigrees • Squares represent Males • Circles represent Females • Horizontal lines connecting a male and female represent mating • Vertical lines extending downward from a couple represent their children • Oldest individuals are found at the top and youngest on the bottom

  4. Pedigrees • Completely shaded in individuals posses the trait • Half shaded in individuals are carriers of the trait

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