Poldactyly is a gentically based human traiy which result in extra fingers and toes. With one form of the disorder, the polydactyly all (P) is dominant to the allele for the normal number of digits (p). A man exhibits this type of polydactyly; his father had polydactyly and his mother did not. He marris a nomarl woman whose family has no history of the genetic abnormality.
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