The presence of alleles A,B represents dominant genes for color and according to the Punnet Square, produces more puppies with this color phenotype.Epistasis occurs when the presence of one gene's allele masks the expression of another allele. According to the Punnette Square, what color would the dog's fur be with aabb genotype?(1 point)

Question

Responses

Black
Black

Yellow
Yellow

Brown
Brown

White

Answer 1

In the context of dog coat color genetics, the fur color can be influenced by multiple genes, including the genes represented by alleles A, B, and potentially others that interact through epistasis.

In general:

• Typically, "A" (dominant) and "B" (dominant) alleles can represent colors such as black or brown.
• "aa" genotype usually results in a yellow phenotype regardless of the B alleles.
• The "b" alleles can contribute to brown or black colors, where dominant (B) leads to black and recessive (bb) leads to brown.

Given the genotype aabb, we can deduce:

• The "aa" means the dog should express yellow based on how the gene interacts with the other alleles.
• The "bb" indicates that both alleles for this color trait are recessive.

Since the presence of "aa" is sufficient to express the yellow color phenotype (since it masks the effect of bb), a dog with a genotype of aabb would have yellow fur.

So the correct response is Yellow.