> Akey specializes in what’s known as rare variation, or changes in DNA that are found in perhaps one in 100 people, or even fewer.<p>This classification of variations into "rare variations" and "common variation" is interesting (and new to me).<p>Any one knows resources that explain more about this?<p>Popular science depictions of "mutations" make them sound like "one lucky shot" kind of thing. This model never made sense to me. I figured these variations must be occurring constantly across the population.<p>It's interesting to me that even the variations which are considered "rare" actually occur at a rate that's around 1 in 100. Hell, even if it was 1 in a 1000, that's still quite a lot.<p>I need more resources about this topic!