A condition called polydactyly gives a person extra fingers or toes. One type of polydactyly is caused by a dominant allele.
A man who is homozygous recessive for the condition marries a woman who is heterozygous for the condition.
What is the probability that their first child will have polydactyly?
1 )
25%
50%
3 )
75%
4 )
100%
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