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vlabodo [156]
3 years ago
14

A square jaw is recessive to a round jaw (dominant), It is possible for two parents with a square jaw to have a child with a rou

nd jaw? Why or Why not?
Biology
1 answer:
sukhopar [10]3 years ago
6 0
No, it would not be possible since both alleles in the genotype are recessive. If the alleles were xx for square jaws, then
x x
x xx xx

x xx xx

would be the possible genotypes for the offspring
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Explanation:

Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d).

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The genotype of a blue-eyed, dimpled chin child would be either of ppDd or ppDD, but in this case, the mother is ppdd and as such, the child cannot have two copies of D allele. Hence, the genotype of the child can only be ppDd.

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