In mice, the gene for tail length has two alleles. A long tail is dominant to a short tail. If a long-tailed mouse that is heterozygous mates with a short-tailed mouse, what are the chances of having offspring with short tails?(1 point)
Responses
25%
25%
100%
100%
75%
75%
50%
The correct answer is 50%.
When a long-tailed mouse that is heterozygous (Ll) mates with a short-tailed mouse (ll), there are four possible combinations of alleles for their offspring: LL, Ll, Ll, and ll.
Only the ll combination has the genotype for a short tail, so the chances of having offspring with short tails is 1 out of 4, or 25%.