Bok
10-23-2012, 01:00 PM
The history of life on Earth has been marked by the evolution of new genes--humans clearly have more genes with more diverse functions than do amoebas. So where do these additional genes, with their new roles, come from? Analysis of genomes shows that the duplication and modification of existing genes seems to be a major avenue for such innovation.
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[More] (http://www.scientificamerican.com/article.cfm?id=gene-genesis-scientists)
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