Thought experiment, if a bunch of people went to live underground, would they evolve differently? Assuming they would live, die and reproduce the same as they did on the surface?
Like, does evolution only stem from survival of the fittest, or does our offsprings genetics change at all from the environment (outside of radiation and such of course)?
Yes, assuming they are completely isolated from the surface population. It’s called genetic drift.
There’s a pretty interesting group of people who were pretty isolated in Kentucky who turned blue, which would be an example of this. https://en.wikipedia.org/wiki/Blue_Fugates
Neat, very interesting