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Nat Rev Genet


Title:The evolution of animal chemosensory receptor gene repertoires: roles of chance and necessity
Author(s):Nei M; Niimura Y; Nozawa M;
Address:"Institute of Molecular Evolutionary Genetics and Department of Biology, Pennsylvania State University, 328 Mueller Laboratory, University Park, Pennsylvania 16802, USA. nxm2@psu.edu"
Journal Title:Nat Rev Genet
Year:2008
Volume:9
Issue:12
Page Number:951 - 963
DOI: 10.1038/nrg2480
ISSN/ISBN:1471-0064 (Electronic) 1471-0056 (Linking)
Abstract:"Chemosensory receptors are essential for the survival of organisms that range from bacteria to mammals. Recent studies have shown that the numbers of functional chemosensory receptor genes and pseudogenes vary enormously among the genomes of different animal species. Although much of the variation can be explained by the adaptation of organisms to different environments, it has become clear that a substantial portion is generated by genomic drift, a random process of gene duplication and deletion. Genomic drift also generates a substantial amount of copy-number variation in chemosensory receptor genes within species. It seems that mutation by gene duplication and inactivation has important roles in both the adaptive and non-adaptive evolution of chemosensation"
Keywords:"Animals *Biological Evolution Gene Deletion Gene Dosage Gene Duplication Genetic Drift *Multigene Family Mutation Probability Pseudogenes Receptors, G-Protein-Coupled/*genetics Receptors, Odorant/genetics Receptors, Pheromone/genetics Taste Perception/gen;"
Notes:"MedlineNei, Masatoshi Niimura, Yoshihito Nozawa, Masafumi eng GM020293/GM/NIGMS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Review England 2008/11/13 Nat Rev Genet. 2008 Dec; 9(12):951-63. doi: 10.1038/nrg2480"

 
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