10 cM separates two hypothetical autosomal human genes. The  dominant alleles are have complete penetrance and will result to  Crossed eyes (e+) and short thumbs (th+). Four children are born to a normal guy and cross-eyed, small-thumbed woman. Two of the children have short thumbs and the other two have crossed eyes. She is carrying her fifth child. What is the probability that this fifth child will be cross-eyed and have short thumbs?

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter5: The Inheritance Of Complex Traits
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Problem 5QP: As it turned out, one of the tallest Potsdam Guards had an unquenchable attraction to short women....
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10 cM separates two hypothetical autosomal human genes. The  dominant alleles are have complete penetrance and will result to  Crossed eyes (e+) and short thumbs (th+). Four children are born to a normal guy and cross-eyed, small-thumbed woman. Two of the children have short thumbs and the other two have crossed eyes. She is carrying her fifth child.

What is the probability that this fifth child will be cross-eyed and have short thumbs?

 

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