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SexLinked Pedigree

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Sex-Linked Pedigree. Pattern Baldness: Carried on X chromosome. Alleles: Xb or X ... Next, figure out which X, if any, is carrying the b (balding gene) ... – PowerPoint PPT presentation

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Title: SexLinked Pedigree


1
Sex-Linked Pedigree
  • Pattern Baldness
  • Carried on X chromosome
  • Alleles Xb or X

2
(No Transcript)
3
X X
X Y
Start by adding the sex chromosomes to each
individual.
4
Next, figure out which X, if any, is carrying the
b (balding gene).
5
What is unique about this individual?
6
Answer Key
Xb Y
Xb X
Xb Y
Xb Y
X Y
Xb Xb
Xb X
X Y
Xb Xb
Xb X
X X
Xb X
Xb Y
Xb Y
Xb Y
Xb Y
X Y
Xb Xb
Xb X
Xb X
Xb X
Xb X
Xb Y
Xb Y
Xb Y
Xb X
Xb X
Xb X
Xb X
7
Answer Key
Xb Y
Xb X
Xb Y
Xb Y
X Y
Xb Xb
Xb X
X Y
Xb Xb
X X
Xb X
Xb X
Xb Y
Xb Y
Xb Y
Xb Y
X Y
Xb Xb
Xb X
Xb X
Xb X
Xb X
Xb Y
Xb Y
Xb Y
Xb X
Xb X
Xb X
Xb X
This female could be either genotype.
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