Polydactyly Is Expressed When an Individual Has Extra Fingers And/or

question 40

Multiple Choice

Polydactyly is expressed when an individual has extra fingers and/or toes.Assume that a man with six fingers on each hand and six toes on each foot marries a woman with a normal number of digits.Having extra digits is caused by a dominant allele.The couple has a son with normal hands and feet,but the couple's second child has extra digits.What is the probability that their next child will have polydactyly?

• A) 1/32
• B) 1/8
• C) 7/16
• D) 1/2
• E) 3/4

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