Look at the family pedigree below. Why do you think that only males have the gen

Question

Look at the family pedigree below. Why do you think that only males have the genetic disorder when it says that a female introduced the gene into the family? Generation Co VI Normal Normal Affected Female female male introducing gene into family Choose one A. The gene with the mutation is located on a non-sex chromosome B. There could be females that have the disorder, but due to the limited number of children humans have there O O were none born in this family. C. The mutation where the gene is located must be on the X chromosome. D. The gene with the mutation must be located on the Y chromosome.

Explanation / Answer

Correct option-[C]

the mutation where the gene is located must be on the x chromosome.and the gene mutation on X recessive chromosome.

There are 2nd to third gen.normal male and affected homozygous female these parents produced all carrier because one x from make normal and by female X chromosome recessive so all carrier.

Then cross between carrier female and normal male there are half male affected because they gain one x from mother those X recessive ,only one x in male then affected male half .

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