Differences between individuals, even those with extraordinary abilities, can stem from a single base pair difference in DNA.

“I think the thing to keep in mind is that some of that variation can come from just a single base pair difference. I mean, a lot of times it's multiple genetic changes that create the differences between individuals. Um but like when you think about you know eye color that's just one genetic variation or genetic variant in some cases like the case of blue eyes you know so you could be exactly the same as someone else except for this one change out of 3.5 billion you know so does that like at what point do we need enough genetic diversity to call a group of humans a different species?”