Biology · May / June 2020 · Paper 11 · Question 38

In guinea-pigs, the allele for black fur (B) is dominant to the allele for brown fur (b). A breeder can sell a brown guinea-pig for more money than a black guinea-pig. Which cross will produce the most money?

1. ABB × BB
2. BBB × Bb
3. CBb × Bb
4. DBb × bb

As printed in the paper