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The Pedigree Below Shows the Segregation of an Autosomal Dominant

Question 33

Multiple Choice

The pedigree below shows the segregation of an autosomal dominant trait. If IV-1 marries IV-5, what is the probability that their first child will be affected? Assume that the homozygous mutant genotype is viable and has the same phenotype as the heterozygote. The pedigree below shows the segregation of an autosomal dominant trait. If IV-1 marries IV-5, what is the probability that their first child will be affected? Assume that the homozygous mutant genotype is viable and has the same phenotype as the heterozygote. A) 1/4 B) 1/2 C) 3/4 D) 3/8 E) 1/8


A) 1/4
B) 1/2
C) 3/4
D) 3/8
E) 1/8

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