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Pedigree Notes

Pedigree Notes. What are pedigrees?. Pedigrees track traits within lines of descent (family trees) and are used to figure out the method of inheritance of certain traits (usually diseases). Methods of inheritance. Autosomal dominant: dominant trait carried on chromosomes in pairs 1-22

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Pedigree Notes

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  1. Pedigree Notes

  2. What are pedigrees? • Pedigrees track traits within lines of descent (family trees) and are used to figure out the method of inheritance of certain traits (usually diseases)

  3. Methods of inheritance • Autosomal dominant: dominant trait carried on chromosomes in pairs 1-22 • Autosomal recessive: recessive trait carried on chromosomes in pairs 1-22 • Sex linked: carried on X or Y chromosome (can be dominant or recessive)

  4. Examples • Y linked • Y chromosome infertility • X linked Recessive: • Hemophilia • X linked Dominant: • Fragile X Syndrome • Autosomal Recessive: • Cystic Fibrosis • Sickle Cell Anemia • Autosomal Dominant: • Huntington’s Disease • Marfan Syndrome

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