What DNA Says About Aryan Invasion Theory -2

[Guest]

I don't believe in AIT, but there's something bothering me just the same, and I hope someone can clear it up.

I am South Indian, Tamil to be precise, and in my experience, I've found North Indians to be light-skinned, how? Why is it most SIs, especially tamils, are dark, whereas most NIs are light-skinned? And if at all there are light-skinned SIs, they happen to be Brahmin.

This is the question AIT sympathizers repeatedly ask me, and to be honest, I am beginning to find it puzzling too. Climate cannot be the reason, it may effect minor changes, but it can't alter skin color as such. So what could be the reason?

I cannot believe in AIT fairy tales, so there must be some other reason as to why most NIs and SI brahmins are light-skinned. The reason I am asking this q related to color is because this happens to be AIT's strong point, they always harp on the color diff. between N and S to prove their point.