2 ms·
That's interesting. The Wikipedia entry [1] mentions that there's still debate about whether it's parallel evolution [2] or convergent evolution [3]. I'm very
by DangitBobby 6y ago
That's interesting. The Wikipedia entry [1] mentions that there's still debate about whether it's parallel evolution [2] or convergent evolution [3].
I'm very curious about why this comment got downvoted.
1.https://en.m.wikipedia.org/wiki/Cephalopod_eye https://en.m.wikipedia.org/wiki/Cephalopod_eye
2.https://en.m.wikipedia.org/wiki/Parallel_evolution https://en.m.wikipedia.org/wiki/Parallel_evolution
> Parallel evolution is the similar development of a trait in distinct species that are not closely related, but share a similar original trait in response to similar evolutionary pressure.
3. https://en.m.wikipedia.org/wiki/Convergent_evolution https://en.m.wikipedia.org/wiki/Convergent_evolution
> Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time.
- CRConrad 6y agoThose categories feel a bit arbitrary and overlapping: The difference between 2 and 3 seems to be whether there is a shared "similar original trait"... So, wouldn't every process of convergent evolution, where a similar trait arises independently in different species -- after a while automatically and inevitably have become parallel evolution, because after some time the once-new trait has of course become a pre-existing one? OK, OK, I'll go check on that debate... But given the quotes of the definitions you posted here, it sure seems pseudo-.