What did researchers discover about the genetic mutation causing the loss of pel

Question

What did researchers discover about the genetic mutation causing the loss of pelvic spines? from the following video http://mediaplayer.pearsoncmg.com/assets/gHqRu3vsDgipqyDIwQQlJ9DH5u5nGaef

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It results in a protein that is no longer functional. It is found in the coding region of the Pitx1 gene. It is found in a regulatory region (a “switch”) upstream of the coding region of the Pitx1 gene. It occurred in a similar DNA region in freshwater stickleback populations all over the world.

Explanation / Answer

It is found in a regulatory region (a “switch”) upstream of the coding region of the Pitx1 gene.This region regulates the mutation from one gene to another and helps the generation to continue.

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