>>936259408
there is proof this has sort of happened in the past theres some evolutionary weirdness people dont talk about,
like in different stages of prehistoric life you see an an animal with a beneficial parasite like one that gives it eyes or an extra fin or something and over time the animal just absorbs it into its makeup somehow.
there is a real case to be made that alot of human organs started as parasites we absorbed into our dna somehow like before eyes maybe there was an eye parasite that would tell us when something was near.
Aside from that ridicoulousness, we do still have beneficial parasites in us that are passed down from the mother, like our stomach bacteria
Some animals have to take a more ridicoulous approach to keep their beneficial parasites, like baby koalas will eat the shit of their parents once to get their stomach bacteria going