Why Do Humans Have So Few Genes?

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Science  01 Jul 2005:
Vol. 309, Issue 5731, pp. 80
DOI: 10.1126/science.309.5731.80

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The discovery that humans have far fewer genes than was assumed prior to the completion of the human genome project has reinforced a growing realization that our genomes and those of other mammals are far more flexible and complicated than they once seemed.