Also sex is *nothing* like race. "race" is surface level adaptations to different geography & climates that started about 70,000 years ago. Sex is older than human beings, older than mammals. Its ancient - vertebrates with internal fertilisation go back 400,000,000 years.
-
This Tweet is unavailable.
-
Started with algae.
Yes!
-
-
Wait, this predates Clownfish?
-
This Tweet is unavailable.
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.