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Pedigree

Pedigree. Pedigree. “genetic” family tree. Male. Pedigree Symbols. Female. Pedigree Symbols. Mating between individuals. Pedigree Symbols. Mating between close relatives. Pedigree Symbols. Offspring “ line ”. Pedigree Symbols. Label generations (Roman Numerals ). Pedigree Symbols.

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Pedigree

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  1. Pedigree

  2. Pedigree “genetic” family tree

  3. Male Pedigree Symbols

  4. Female Pedigree Symbols

  5. Mating between individuals Pedigree Symbols

  6. Mating between close relatives Pedigree Symbols

  7. Offspring “line” Pedigree Symbols

  8. Label generations (Roman Numerals) Pedigree Symbols I II

  9. Label birth order (oldest  youngest) Pedigree Symbols I 1 2 II 1 2 3

  10. Identical Twins Pedigree Symbols

  11. Nonidentical (Fraternal) Twins Pedigree Symbols

  12. Offspring of unknown sex Pedigree Symbols

  13. Aborted or stillborn Pedigree Symbols

  14. Deceased Pedigree Symbols

  15. Affected individual Pedigree Symbols

  16. Heterozygous individual Pedigree Symbols

  17. X-linked carrier (remember: only woman can be X-linked carriers) Pedigree Symbols

  18. Drawing a pedigree Draw a pedigree that shows three children (one older brother and two younger sisters). The mother is older than the father. The mother’s father is older but the father’s mother is older. The eldest daughter, the father’s father (grandfather), and the mother are afflicted with a recessive disorder.

  19. Drawing a pedigree I 1 2 3 4 II 1 2 III 1 2 3

  20. Afflicted Males More afflicted men than women

  21. Afflicted Males “Equal” Afflicted Men and Women AfflictedFemales

  22. Autosomal Dominant Parent with Trait

  23. Autosomal Recessive SkipsGeneration Parent can exhibit trait

  24. Autosomal

  25. Sex-linked X-linked Dominant XAXA XAXa XaXa XAY XaY XaXa X-linked Recessive XAXA XAXa XAY XaY

  26. Sex-linked Recessive

  27. Autosomal Dominant

  28. Autosomal Dominant

  29. Sex-linked Recessive

  30. Describe this family Autosomal Recessive

  31. Label the genotypesAutosomal recessive Aa Aa aa Aa ? ? Aa aa aa aa Aa aa

  32. Describe this family Sex-linked Dominant

  33. Label the genotypesSex-linked Dominant XAY ? XaY XAXa ? XAY XaXa XAXa XAXa XAXa XAXa XaY XaY XaY

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