That is, they're useful for the female and not particularly harmful for the male, so they live on.
It's also an instance of DRY (don't repeat yourself) "coding" in our DNA: basically males and females carry the same instructions, with a bunch of randomly interspersed if/else conditions that hinge on the presence of testosterone (coded for in the small Y chromosome)
That is, they're useful for the female and not particularly harmful for the male, so they live on.
It's also an instance of DRY (don't repeat yourself) "coding" in our DNA: basically males and females carry the same instructions, with a bunch of randomly interspersed if/else conditions that hinge on the presence of testosterone (coded for in the small Y chromosome)