Question

A student wants to cross parent mice to produce offspring with black fur and offspring
with white fur. If black fur color (B) is dominant to white fur (b), what should be the
genotypes of the parent mice?
O BB and BB
O bb and bb
O BB and Bb
OBb and Bb
| SCHOOLOGY

Answer 1

Answer:

Bb and Bb

Explanation:

This is the only combination of the four that will produce both mice with black fur and mice with white fur. Option A will only give black fur, option B will only give white fur, and option C will only give black fur since parent 1 will only give the dominant B allele to the offspring. With Bb and Bb, the genotypes of the resulting offspring could be BB, Bb (which will result in black fur) or bb (which will result in white fur).