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Genetics, Vol. 178, 405-412, January 2008, Copyright © 2008
doi:10.1534/genetics.107.080200

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African Drosophila melanogaster and D. simulans Populations Have Similar Levels of Sequence Variability, Suggesting Comparable Effective Population Sizes

Viola Nolte and Christian Schlötterer1

Institut für Tierzucht und Genetik, Veterinärmedizinische Universität, A-1210 Wien, Austria

1 Corresponding author: Institut für Tierzucht und Genetik, Veterinärmedizinische Universität Wien, Josef Baumann Gasse 1, A-1210 Wien, Austria.
E-mail: christian.schloetterer{at}vu-wien.ac.at

Drosophila melanogaster and D. simulans are two closely related species with a similar distribution range. Many studies suggested that D. melanogaster has a smaller effective population size than D. simulans. As most evidence was derived from non-African populations, we readdressed this question by sequencing 10 X-linked loci in five African D. simulans and six African D. melanogaster populations. Contrary to previous results, we found no evidence for higher variability, and thus larger effective population size, in D. simulans. Our observation of similar levels of variability of both species will have important implications for the interpretation of patterns of molecular evolution.






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Copyright © 2008 by the Genetics Society of America.