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Lilit [14]
3 years ago
9

Homozygous dominant and homozygous recessive

Biology
1 answer:
o-na [289]3 years ago
3 0
It would be 100% Heterozygous
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Answer:

1/2

Explanation:

Let's assume that the allele "p" is responsible for PKU in the homozygous state. According to the given information, both the parents are unaffected by the disorder but have an affected child. This means that both the parents carry at least one copy of the recessive allele responsible for the disease. Therefore, the genotype of each of the parents is Pp. A cross between Pp and Pp would produce progeny in following ratio=

Pp x Pp = 1/4 PP: 1/2/ Pp: 1/4 pp

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A female is homozygous for a recessive trait while the male is homozygous dominant for the same
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