woman by another man, What Color-blindness is an X-linked recessive disease. A n
ID: 274614 • Letter: W
Question
woman by another man, What Color-blindness is an X-linked recessive disease. A normal man is going to marry a "normal" are the probabilities of this new marriage producing a color blind child? Oa, 50% 0f all the boys will be color blind who already has had a color blind son Ob, 100% of the girls will be color blind Oc, 100% of the boys wil be color blind Od. None, they are both normal . S0% of all the children will be color blind QUESTION 12 The presence of short hairs on leaves is controled by dominant allele H. Plants with genotype hh have smooth leaves. Two parental plants with unknown genotype were crossed and produced an F1 progeny of 32 hairy and 32 smooth plants. What are the parental genotypes?Explanation / Answer
11. Option A is correct.
From the given information, it is clear that the woman is a carrier for the recessive disease-causing allele. Since males obtain X-chromosome from their mother and the mother is heterozygous, 50% of the boys will be affected.
Parental cross: XCXc X XCY
Progeny: XCXC XCY XCXcXcY
12. Option C is correct.
Parental cross: Hh X hh
Progeny: Hh Hh hh hh
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