Question

What did researchers discover about the genetic mutation causing the loss of pelvic spines?
Select all that apply.
.
It is found in a regulatory region (a “switch”) upstream of the coding region of the Pitx1 gene

It is found in the coding region of the Pitx1 gene.

It results in a protein that is no longer functional.

It occurred in a similar DNA region in freshwater stickleback populations all over the world.

Answer 1

Researchers discovered that the genetic mutation causing the loss of pelvic spines is found in the coding region of the Pitx1 gene.

Changes in Pitx1 gene happen in response to the changes of the environment where the fishes live. The fishes undergoes changes without compromising its abilities