Heisenberg
Lifer
- Dec 21, 2001
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Originally posted by: Mookow
Originally posted by: Mallow
negative... humans have found too many ways to bypass natural selection. There are no longer any selective pressures on the human race. No particular gene really gives an individual an advantage, except heterozygous sickle cell in a malaria zone. I'm sure there are a couple others but not many.
how does have sickle cell help fight malaria?
People who are carriers (they have one of the two genes required) but don't have sickle cell anemia itself are immune to malaria. I'm not sure of the exact biology behind how it works. Something to do with the difference in red blood cell structure I think.