Bill is color blind and has developed Huntington’s disease.  His mother has normal vision and does not have Huntington’s disease.  Susan does not have Huntington’s disease and has normal vision.  Her mother is normal in all respects, but her father is color blind and suffers from Huntington’s disease. Bill's father is not color blind or have huntington's disease. a. Make a pedigree and indicate the alleles for each individuals traits. b. If Bill and Susan marry, and ignoring the fact that Huntington’s disease is lethal, what types and proportions of children can they produce? c. If Bill and Susan marry, what is the probability that the first two children will be color blind females without HD, the third child will be a color blind male with Huntington.

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