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Vinil7 [7]
3 years ago
12

The presence of a widow's peak (pointed hairline on forehead) is inherited in a dominant manner. If two people who are heterozyg

ous for widow's peak have children, what is the expected phenotypic ratio of their offspring
Biology
1 answer:
Kaylis [27]3 years ago
7 0

Answer:

widow's peak children = 3/4

no widow's peak children = 1/4

Explanation:

Widow's peak is a dominant trait. Assuming that the gene that controls the trait is represented by the allele A, the alternate form (no-widow's peak) would be a.

If two people who are heterozygous have children:

                              Aa   x   Aa

                        AA    Aa    Aa    aa

widow's peak = 3/4

no widow's peak = 1/4

<em>the expected phenotypic ratio of the offspring would be 3 to 1 widow's peak to no-widow's peak.</em>

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