We are 99 9 % the same


Research has repeatedly shown that race is not a scientifically valid concept. Across the world, humans share 99.9% of their DNA. The characteristics that have come to define our popular understanding of race — hair texture, skin colour, facial features — represent only a few of the thousands of traits that define us as a species. Visible traits tell us something about population histories and gene–environment interactions. But we cannot consistently divide humans into discrete groups.