Question

Next, you perform a cross with a mouse with black fur and a mouse with white fur. which result(s) for the offspring would indicate that the mouse with black fur was heterozygous? 4 mice with black fur 8 mice with black fur, 1 mouse with white fur 5 mice with black fur, 6 mice with white fur 6 mice with black fur, 2 mice with white fur

Answer 1

Answer:

8 mice with black fur, 1 mouse with white fur

5 mice with black fur, 6 mice with white fur

6 mice with black fur, 2 mice with white fur

Explanation:

I just got it right

Answer 2

Answer:

8 mice with black fur, 1 mouse with white fur

5 mice with black fur, 6 mice with white fur

6 mice with black fur, 2 mice with white fur

Explanation:

Let the allele for black color fur be represented by "B" and the allele for white color fur be represented by "b"

Also let the black color be dominant over white color fur.

Genotype for homozygous black and white mouse will be "BB" and "bb"

In case if the black fur mouse if heterozygous, then its genotype would be "Bb"

Now if a cross is carried out between  black fur and a mouse with white fur, we get -

Bb * bb

Bb, Bb, bb, bb

So the correct answer is option

8 mice with black fur, 1 mouse with white fur

5 mice with black fur, 6 mice with white fur

6 mice with black fur, 2 mice with white fur