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Mutations are the grist of evolution, and have accumulated in our DNA over time. When populations separate, each group accumulates their own unique set of DNA mutations. Because mutations in a particular sequence of DNA occur at a constant rate, the number of accumulated mutations in that sequence is proportional to the length of time that two groups have been separated. This concept is often known as the "molecular clock."

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      Keywords:

      populations,molecular clock,grist,NSDL,constant rate,NSDL_SetSpec_BEN,evolution,dna mutations,animation,oai:nsdl.org:2200/20081106034542901T,Life Science,length of time,Social Sciences

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      English

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      Creative Commons Attribution Non-Commercial Share Alike

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