Quote:
Originally posted by Mike33
sickle cell may make them more resistant to malaria, but you're certainly not saying we should all hope to have a sickle cell trait are you? Blacks seem to have problems with that sometimes.
It's a gene that is passed on. Yes I agree. What does that have to do with evolution?
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If you live in an environment that has a lot of malaria then having sickle cell trait is an advantage and improves survival
It is an example of how natural selection protects a trait dependant on the environment. Natural selection is the main mechanism through which evolution works.