What did researchers discover about the genetic mutation causing the loss of pelvic spines?
select all that apply.
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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.