> I was talking about Chromosomal differences between humans, NOT gene-level differences.

Since the former includes the latter, your excuse makes zero sense. It sounds like a convoluted attempt to obfuscate the fact that you thought "chromosomes" was synonymous with "allosomes".

> It looks like you skipped out on Biology 101

How so? This is a weird projection. You're the one who clearly didn't know what chromosomes are.

Finally, you still haven't answered the question: Is a person black simply by virtue of claiming that they "identify as" black?