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To deter predators...
(lemmy.world)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
This is a science community. We use the Dawkins definition of meme.
Eh... they mutate randomly, and then selection acts. If there is variation that solves a problem, selection will promote that variation.
Evolution is very much not random, it is a direct consequence of variation and selection. This does not mean that they evolve to solve problems, but problems often drive evolution.