Question

suppose that a mouse with black fur has both an allele for black fur and an allele for white fur (bb). based on this information, you can conclude that the dominant allele must be for dropdown fur and the recessive allele must be for dropdown fur. the dropdown options are black, white.

Explanation:

Step1: Recall Dominant/Recessive Traits

In genetics, a dominant allele is expressed in the phenotype when present (even in heterozygous form, like Bb). The mouse has genotype Bb and phenotype black fur. So the allele for black (B) is dominant, as it's expressed over white (b).

Step2: Determine Allele Types

Since the mouse shows black fur with Bb, dominant allele (expressed) is black, recessive (masked) is white.

Answer:

First blank: black; Second blank: white