Huntington's disease is an autosomal dominant disorder, which means that a person needs only one copy of the defective gene to develop the disorder. Koshal has Huntington's disease, but his mother does not have Huntington's disease. Koshal and his wife are now expecting a child. What is the probability that their child will have Huntington's disease? 1/4 1/3 1/2
Added by Scott H.
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Since Koshal has Huntington's disease (HD) and his mother does not, it means that he inherited the defective gene from his father. So, Koshal has one normal gene (N) and one defective gene (D), making his genotype ND. Show more…
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