Comment on "Ongoing Adaptive Evolution of ASPM , a Brain Size Determinant in Homo sapiens " and " Microcephalin , a Gene Regulating Brain Size, Continues to Evolve Adaptively in Humans"

Author:

Currat Mathias12,Excoffier Laurent12,Maddison Wayne12,Otto Sarah P.12,Ray Nicolas12,Whitlock Michael C.12,Yeaman Sam12

Affiliation:

1. Department of Zoology, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.

2. Computational and Molecular Population Genetics (CMPG), Zoological Institute, University of Bern, 6 Baltzerstrasse, CH-3012 Bern, Switzerland.

Abstract

Mekel-Bobrov et al . and Evans et al . (Reports, 9 Sept. 2005, p. 1720 and p. 1717, respectively) examined sequence data from modern humans within two gene regions associated with brain development, ASPM and microcephalin , and concluded that selection of these genes must be ongoing. We show that models of human history that include both population growth and spatial structure can generate the observed patterns without selection.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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