Review
Nature Reviews Genetics 9, 421-432 (June 2008) | doi:10.1038/nrg2339
Focus on: Global Challenges
Detecting genetic responses to environmental change
Ary A. Hoffmann1 & Yvonne Willi2 About the authors
Abstract
Changes in environmental conditions can rapidly shift allele frequencies in populations of species with relatively short generation times. Frequency shifts might be detectable in neutral genetic markers when stressful conditions cause a population decline. However, frequency shifts that are diagnostic of specific conditions depend on isolating sets of genes that are involved in adaptive responses. Shifts at candidate loci underlying adaptive responses and DNA regions that control their expression have now been linked to evolutionary responses to pollution, global warming and other changes. Conversely, adaptive constraints, particularly in physiological traits, are recognized through DNA decay in candidate genes. These approaches help researchers and conservation managers understand the power and constraints of evolution.
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Author affiliations
- Centre for Environmental Stress and Adaptation Research, Bio21 Institute, Department of Genetics, The University of Melbourne, Parkville 3010, Australia.
- Institute of Integrative Biology, Eidgenössische Technische Hochschule Zürich, 8092 Zürich, Switzerland.
Correspondence to: Ary A. Hoffmann1 Email: ary@unimelb.edu.au
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