Pedigrees
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Pedigrees PowerPoint PPT Presentation


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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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Pedigrees

Pedigrees


Pedigrees1

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.


Pedigrees2

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


Pedigrees3

Pedigrees

  • Completely shaded in individuals posses the trait

  • Half shaded in individuals are carriers of the trait


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