The following diagram shows the genetic map of an individual in the region of a

Question

The following diagram shows the genetic map of an individual in the region of a gene that has a dominant allele D which causes Marfan's syndrome. The DNA probe hybridizes to a segment of DNA that is known to be about 4 map units away from the D/d gene.

If this person has a child with a normal individual who has been shown to be homozygous for the short DNA fragment. Their unborn child is homozygous for the short DNA restriction fragment. What is the likelihood that the child will have have Marfan's syndrome? (Enter your answer as a percentage)

Explanation / Answer

The probability of the unborn child with homozygous allele having Marfan's syndrome is 0 % . Since Marfan's syndrome usually effects heterozygous individuals.

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