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OpenStudy (anonymous):
How do scientists use DNA to support evolution?
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iYuko (iyuko):
DNA can be used to match two species and determine if they are related or share a common ancestor. In addition, the existence of DNA itself is proof for evolution on a large scale - virtually all organisms share the same nucleic acid as the genetic code, leading scientists to the conclusion that all species shared a common ancestor at one time.
iYuko (iyuko):
Just like you probably have hair or eyes like your mom or dad.
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