More Genetics In 33, we learned that for some diseases, such as sickle-cell anemia, an

Chapter 5, Problem 34

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More Genetics In 33, we learned that for some diseases, such as sickle-cell anemia, an individual will get the disease only if he or she receives both recessive alleles. This is not always the case. For example, Huntingtons disease only requires one dominant gene for an individual to contract the disease. Suppose that a husband and wife, who both have a dominant Huntingtons disease allele (S) and a normal recessive allele (s),decide to have a child.(a) List the possible genotypes of their offspring.(b) What is the probability that the offspring will not haveHuntingtons disease? In other words, what is the probabilitythat the offspring will have genotype ss? Interpret thisprobability.(c) What is the probability that the offspring will haveHuntingtons disease?

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