There isn't really a substantial biological basis for race

It depends on what you're defining as race.

You can take bones from sites and catergozie caucasian, African, asian based off the bones features.

If you're saying race as in a cultural basis, then yeah, there isn't a biological marker for cultural race. But their definitely are biological markers for ancestry race (caucasian, asians, etc).

It's a weird myth that gets pushed that there are no real biological differences between ancestral races (which doesnt mean black skin = African, brown skin = mexican). There are biological basis for race in that context. And that's okay. We dont need to be afraid of differences. I feel like that is why the argument there is no biological difference is made, to combat racism and prior junk science (non-white brains are not as good...blah blah type of bs).