Has anybody had a DNA test to determine their ancestral lineage? I'm curious about this and wondering how it works, what it will tell you, etc. I have a twin brother and I think I read somewhere that it would be better for the male to have it than the female but now I can't remember why.

I know we have some scientist curlies here, so I'm curious to see what you all think!

I was born to be a pessimist. My blood type is B Negative.