Evolutionary Danger for Rainforest Species

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Science  04 Jul 2003:
Vol. 301, Issue 5629, pp. 58-59
DOI: 10.1126/science.1087384

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Numerous genetic analyses show that virtually all traits are accompanied by genetic variance. In a Perspective, Roff explains surprising new findings that reveal a lack of genetic variation in an ecologically important trait (desiccation resistance) in a population of rainforest fruit flies ( Hoffmann et al.). Roff discusses the implications of this study for the adaptation of species to global warming.