Mitosis, Meiosis, And Patterns Of Inheritance Worksheet Page 21

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32. A boy whose parents and grandparents have normal vision is colorblind. Draw a family chart which gives
genotypes for this boy, his mother and father, and his maternal grandparents.
33. In humans, the gene for hemophilia is sex-linked on the X chromosome. A young woman whose brother
has hemophilia is contemplating marriage to a young man who has no history of hemophilia in his family.
What is the probability that any of her children have hemophilia? Show your work-A pedigree is
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21

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