Learn about the trashy side of DNA on this Moment of Science.
Of course, using DNA to identify race raises many difficult ethical questions. After all, in the past, pseudo-scientific racial divisions provided justification for atrocities like slavery and the Holocaust.
It doesn’t even matter that we’re not related. DNA is a pattern or sequence of nucleotides, right? You might also remember that there are actually only four different nucleotides, and that they’re arranged in pairs.