How does gene diversity develop if we all came from common ancestors?
In: Biology
Just to add onto the other answers, a slight mutation rate is actually built into us. It’s *possible* to make proteins (DNA polymerases) that are more accurate at replicating our DNA, but we don’t actually have them because some amount of diversity is good.
For a real-life example, the influenza virus has a relatively inaccurate polymerase, which causes lots more mutations, which is why it’s hard to make a perfect flu vaccine.
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