DOI: 10.1126/science.1092180 , 971 (2004); 303 Science et al. G. Bernasconi, Evolutionary Ecology of the Prezygotic Stage www.sciencemag.org (this information is current as of December 2, 2006 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/303/5660/971 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/303/5660/971/DC1 can be found at: Supporting Online Material http://www.sciencemag.org/cgi/content/full/303/5660/971#otherarticles , 17 of which can be accessed for free: cites 40 articles This article 18 article(s) on the ISI Web of Science. cited by This article has been http://www.sciencemag.org/cgi/content/full/303/5660/971#otherarticles 1 articles hosted by HighWire Press; see: cited by This article has been http://www.sciencemag.org/cgi/collection/evolution Evolution : subject collections This article appears in the following http://www.sciencemag.org/help/about/permissions.dtl in whole or in part can be found at: this article permission to reproduce of this article or about obtaining reprints Information about obtaining registered trademark of AAAS. c 2005 by the American Association for the Advancement of Science; all rights reserved. The title SCIENCE is a Copyright American Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. Science (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by the on December 2, 2006 www.sciencemag.org Downloaded from