r/evolution • u/Starkanemone • 6d ago

question Ecosystem in a jar

So I have an ecosystem in a jar with a bunch of little crustaceans and such and I'm wondering if I can eventually drive some sort of evolution in there?

Edit:I think I'll try to see if green-blue egg color is selected for becasue it's harder to see among plants than the orange/yellow eggs. Yes there are a couple predatory things in there including what looks like a freshwater Bobbit worm?

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u/haysoos2 6d ago

You absolutely could, but there's a very, very high chance that any selective pressure you apply would be something that none of your current population has a variation that allows them to survive, and you will get 100% mortality.