Why 23andMe can't tell you everything about yourself (yet)

Dobbs grossly overstates the fraction of the human genome that is shared with other species. Only about half of the human genome can be aligned to the dog genome, so 80% shared with cows is very likely wrong. 60% shared with fruit flies and chickens is grossly wrong, since only 3% of the human genome can be aligned to the chicken genome. 99% with chimps? Wrong again. It’s 96% at best (98% identical base-per-base over 98% of the human genome), and that’s only if you ignore differences like large-scale inversions.