Pedigree Charts

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Pedigree Charts

• Diane Philip

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What is a Pedigree?

• A pedigree is a chart of the genetic history of a
  family over several generations.
• Scientists and genetic counselors use pedigrees
  to analyze family history.

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Reading a Pedigree

• Female
• Male
• Married

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Reading a Pedigree

• Examples of connected symbols
• Siblings
• Fraternal twins
• Identical twins

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Reading a Pedigree

• Affected
• Normal

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Autosomal or Sex-linked?
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Dominant or recessive?