Hybrid Neanderthal/Denisovan first generation child

[Warpy]

22. No, I mentioned short stature and increased production of RBCs

The stature evolved as a strategy for living at very high altitude. The increased production of RBCs happens to all of us at altitude, which is why Olympic athletes train here and Denver. The extra RBCs mean that when they compete at low altitude, they have a much greater oxygen carrying ability that people who don't train at altitude.

I did find one study of hypoxia tolerance mitigated by genetics. While they didn't find the exact mechanism displayed by Tibetans, they did find one sequence that does nearly the same thing and seems to be in the process of being selected for at altitude.

Height: https://www.science.org/doi/pdf/10.1126/science.360.6390.696

Hypoxia mitigation: https://arstechnica.com/science/2019/11/the-genetic-basis-of-peruvians-ability-to-live-at-high-altitude/