Given that mutation occur because there is a change in the structure of DNA, in animals, for instance the predominant species who may have mutations that help them survive in the wild world, those could be the ones who pass it on to their offspring. In my mind mutations are only transfer between generations if there is an actual benefit that lead to that species living longer, survive, protect or even hide better.
But with humans, how mutations work? We are not been chased down, eaten by predators? In that scenario, where everyone’s offspring gets a copy of a DNA from their parents, how we as humans have developed through the centuries, how is DNA mutations are propagated more so that it takes over and then more people are born with that mutation? For example, babies being born without wisdom teeth, smaller pinkie toe.
In the scenario of wisdom teeth, i heard that humans used to chew raw meet or something like that and thus we used those wisdom teeth more, but how it became so that now babies are being born without it?
I hope i made myself understand, I’m wiring down this before going to bed and I could go to sleep before looking for an answer, and my brain is not braining atm.
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You confused passing a mutation and spreading. Mutation can be passed to offspring as long as parent won’t fail to breed and that mutations can lead to minor “bad” traits or neutral traits. Those mutations appear sometimes and stay or die out eventually. Beneficial mutations that give some beneficial traits in long term have to promote survivalibity of an individual eg lactose tolerance.
And no, not using something doesn’t necessarily mean it will disappear, also mutation are noticable in geological scale more than in historical so fact that we as a humans doesn’t loosen wisdom teeth in 3000 hears is just because it’s too short to happen and wisdom teeth isn’t “bad trate” enough to exist a pressure for loosing it
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