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A member asked:
What is an example of a helpful mutation in humans?
A doctor has provided 1 answer
All healthy genes: Every one of our genes has mutated repeatedly and been selected for over the course of evolution. Now, I happen to carry a mutant iron transporter that makes it easier for me to keep my iron supplies loaded despite donating blood. Two doses can make me sick. Beneficial mutations usually don't get detected. One mutant erythropoietin receptor created a family of world-class athletes. Etc.
Answered 1/1/2015
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