Question

11. If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?

Answer 1

The answer is hox gene.

Hox genes are responsible for an embryo's body plan. They determine different body structures - legs, vertebrae, antennae, wings, depending on groups. Mutation in hox genes is serious mutation since it affects the early stages of embryo and consequently, normal development. If a mutation occurs in the hox gene for legs growth, the legs will not develop.