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Name: Neil
Status: Student
Grade:  9-12
Location: ND
Country: United States
Date: March 2007

Hi, I was just wondering what the evolutionary perspective on blood types is. How did they come to form? Also, why are there variations if there are not apparent selections against a certain type?

Dear Neil,

Another student asked a very similar question about Blood Type Proteins, although not quite as in depth as yours. But the excellent replies from 2 of our scientists might also provide some insight into your questions:

My apologies for the delay in replying,

Jeff Buzby, Ph.D.

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