The Manx mutation, which produces no tail in cats, is a recessive lethal. What phenotype ratios would be expected from a cross between two Manx cats? A. ¾ Manx: ¼ normalB. ¾ normal: ¼ ManxC. ⅔ Manx : ⅓ normalD. All Manx

Question

Biology

Lacey Hudson

16 October, 07:00

The Manx mutation, which produces no tail in cats, is a recessive lethal. What phenotype ratios would be expected from a cross between two Manx cats? A. ¾ Manx: ¼ normalB. ¾ normal: ¼ ManxC. ⅔ Manx : ⅓ normalD. All Manx

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Annika Watts · Answer 1

D

Explanation:

As both parents are Manx cats, their genotypes would be rr. Performing a cross, we know that all the resulting offspring can only have one possible genotype, which is rr, making them Manx cats as well. Hence, all their offspring would be Manx cats.