Rabid Rob3 wrote...
The one scientific inaccuracy that actually bothered me in ME2 was the constant refrain about humans being "genetically diverse" compared to the other sophonts. As it happens, here on the Real Earth, humans are among the least genetically diverse organisms on the planet, and if you also factor in that there are billions of us spread over the entire planet, well, the only organisms that compare are ones that live on us, like the bacteria in our guts, or the mites on our skin.
Right...and the other races have simply taken that somewhat further than humanity. If you consider their histories and reproductive biologies (at least those we know something about), it's not really that odd. Asari: no sex (not in the gamete-meets-gamete sense. Yes, their "mating" seems to induce mutations somehow, but at what rate?). Salarians: tiny number of females, small fraction of males allowed to breed. The vast majority of them never pass on their genes to any offspring. Krogan: enormous artificial bottleneck forcibly applied by Genophage and disproportionate mortality rate. Quarians: another artificial bottleneck, this time forcibly applied by artificial intelligence, coupled with strict population controls. Drell: tiny fraction saved by Hanar. I.e., another bottleneck. Vorcha: basically, their unusual genetics have practically frozen them evolutionarily speaking.
We don't really know much about the other races, so we don't know why their diversity is lower, but it's hardly implausible as any number of genetic mechanisms or historical circumstances could explain it. It also pays to keep in mind that, in absolute terms, the differences might not be all that great between humans and other races. That and it seems clear that it's not a case of every other race having the exact same level of diversity. It's clearly a scale, with Vorcha likely being the least diverse, humans the most. Who knows? Maybe Turians are just a little behind us in second place.
Modifié par didymos1120, 25 février 2010 - 05:03 .