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Vanyuwa [196]
3 years ago
6

In mice, black color (B) is dominant to white (b). At a different locus, a dominant allele (A) produces a band of yellow just be

low the tip of each hair in mice with black fur. This gives a frosted appearance know as agouti. Expression of the recessive allele (a) results in a solid coat color. If mice that are heterozygous at both loci are crossed, ___ out of 16 will be black in color.
Biology
1 answer:
artcher [175]3 years ago
4 0

Answer:

3

Explanation:

Heterozygous mice at both loci would be BbAa genotype.

B (black) is dominant over b (white) but the presence of A results in agouti.

Crossing two heterozygous:

     BbAa    x    BbAa

Progeny

<em>9 B_A_ - Agouti</em>

<em>3 bbA_ - agouti</em>

<em>3 B_aa - Black</em>

<em>1 bbaa - white</em>

Hence, 3 out of 16 progeny will be black in color.

<em>See the attached image for the Punnet's square analysis of the cross.</em>

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