convergent evolution. adaptive radiation. artificial selection. genetic equilibrium.
I gave my students this multiple choice question: Often organisms seem similar in their outward appearances. For example, a porpoise and a shark seem closely related, but they are not. Such similarity is the result of

Only one answer is correct among these 4 choices:
- convergent evolution.
- adaptive radiation.
- artificial selection.
- genetic equilibrium.

Could you tell me which one is correct?

convergent evolution.