Question

inheritance to another mouse trait suppose that you had a male mouse with black eyes and a female mouse with red eyes. you know that the allele for black eyes is dominant, and you want to determine whether the male is heterozygous. to do so, you would do a test cross. breed them and look for approximately a. done

Explanation:

Step1: Define alleles

Let \(B\) be the dominant allele for black - eyes and \(b\) be the recessive allele for red - eyes. The female mouse with red eyes has the genotype \(bb\).

Step2: Analyze test - cross scenarios

If the male is heterozygous (\(Bb\)), when crossed with \(bb\) (female), the possible genotypes of the offspring are determined by the Punnett - square analysis. The cross \(Bb\times bb\) gives \(Bb:bb = 1:1\). So the ratio of black - eyed (\(Bb\)) to red - eyed (\(bb\)) offspring is \(50\%\) to \(50\%\).

Answer:

50% to 50%