What do we call structures that are inherited from ancestors but have lost much or all of their original function due to differe
nt selection pressures acting on the descendant? These structures are still there because they are in the DNA, but they are not really needed anymore: ex: hind limbs and pelvic bone of a whale Ex: appendix in humans
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What do we call structures that are inherited from ancestors but have lost much or all of their original function due to different selection pressures acting on the descendant? These structures are still there because they are in the DNA, but they are not really needed anymore: ex: hind limbs and pelvic bone of a whale
