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i don’t think evolution works that fast; the only thing that fast would be something like selective breeding for dogs, but thats intentional; the type of evolut
by xdavidliu 3y ago
i don’t think evolution works that fast; the only thing that fast would be something like selective breeding for dogs, but thats intentional; the type of evolution you’re talking about is more on the order of 10^6 years
- JoeAltmaier 3y agoEvolution is working every single generation. Dogs no more or less than humans or anything else. Dogs were selected, but everything responds to environmental pressures. All the time. Natural ones no different than human-provided ones, right? And humans have changed more in the last 50K years than in the 1M before that. Because of civilization I have to think. Anyway, off by 2 orders of magnitude there, for really significant changes.
- xdavidliu 3y agoi’m not saying the effect is zero; im saying the effect is clearly too small; there are obviously degrees to this. halving of overall hormone levels are surely not explained by a measly three generations of improved health care removing the selective pressure in favor of the survival of high-hormone humans
- lukas099 3y agoEveryone always says this but I’ve never heard it from an actual evolutionary biologist. Some genes evolve faster than others; in fact, some genes have themselves evolved to be able to evolve faster.