We are all related (Thank God!)

Well, if the geneticists were in charge of immigration control, it would be an open-door policy.

"Every one of us has two parents, four grandparents, eight great-grandparents, and so on. The number of ancestors doubles with each generation. So what does this mean? Going back 30 generations (approx. 750 years ago), every person alive today will have over a billion possible ancestors. However, the world population for the year 1250 AD is estimated at only 400 million..."

DNA tests could also be a powerful tool in the fight against racism. It is not just that they prove, once and for all, that any notions of race or racial purity are patently absurd and scientifically wrong. Their power lies in that they prove it by showing people what is in their own blood. When the truths of science become personal truths, they get taken more seriously.