Suppose a true-breeding brown-striped lizard is crossed with a true-breeding white-striped lizard. In the next generation, all of the lizards are brown-striped.

Question

What does this outcome tell you about the allele for brown stripes?

Responses

The brown stripe allele shows incomplete dominance.
The brown stripe allele shows incomplete dominance.

The brown stripe allele is sex-linked.
The brown stripe allele is sex-linked.

The brown stripe allele is dominant to the white stripe allele.
The brown stripe allele is dominant to the white stripe allele.

The brown stripe allele is recessive to the white stripe allele.

Answer 1

The outcome of the cross, where a true-breeding brown-striped lizard produces offspring that are all brown-striped when crossed with a true-breeding white-striped lizard, indicates that the brown stripe allele is dominant to the white stripe allele.

Therefore, the correct response is:

The brown stripe allele is dominant to the white stripe allele.