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Pedigree

Pedigree. A pedigree is a family tree that allows you to follow the inheritance of a single gene Pedigrees help us infer if a trait from a single gene is dominant or recessive. Anatomy of a pedigree. A vertical pattern of inheritance indicates a rare dominant trait.

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Pedigree

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  1. Pedigree • A pedigree is a family tree that allows you to follow the inheritance of a single gene • Pedigrees help us infer if a trait from a single gene is dominant or recessive.

  2. Anatomy of a pedigree

  3. A vertical pattern of inheritance indicates a rare dominant trait. Huntington’s disease: A rare dominant trait Assign the genotypes by working backward through the pedigree

  4. A horizontal pattern of inheritance indicates a rare recessive trait. Cystic fibrosis: a recessive condition Assign the genotypes for each pedigree

  5. Whirling Disorder • Individuals affected with the whirling disorder dance when they hear Rolling Stones tunes • As a geneticist, study the pedigree to find the gene responsible for the disease and answer questions Moves Like Jagger

  6. Finding a Gene on the Chromosome Map

  7. The Genographic Project

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