I understand what I was forced to learn about evolution in school but the teachers could never answer basic questions without doing some crazy dance. For instance what about the stomach? How did a stomach evolve to hold acid? or the eye needs all of its parts to function so how does anyone part form individually.
Evolution hinges or these mutations but there are very few beneficial mutations that I am aware of although I have heard some argue that sickle cell is a beneficial mutation (LOL) . Mutations would have to be passed to the offspring as well which usually does not happen and you have other things to consider like the pleiotropic effect which means one system affected by a mutation does not happen in isolation but usually effects other systems of the organism.
If someone could show me beneficial mutations (and no I dont mean moths during the industrial revolution that have already been shown to in fact too not be an example of this) then perhaps I would change my views.
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