Pharyngeal slits are present in the embryos of organisms as diverse as fish,chickens,and humans.Why would organisms as different as these have similar embryonic structures?

Question

Quizplus · Accepted Answer

The presence of similar embryonic structures in organisms as diverse as fish, chickens, and humans suggests that they all shared a common ancestor who also had pharyngeal slits in its embryo. This is because such similarities cannot be attributed to chance or convergence alone, but rather point to a common evolutionary origin.

Pharyngeal Slits Are Present in the Embryos of Organisms as Diverse