Origin and evolution of new genes |
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Authors: | Xin?Li Shuang?Yang Lixin?Peng Hong?Chen Email author" target="_blank">Wen?WangEmail author |
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Institution: | LI Xin1,2,YANG Shuang1,3,PENG Lixin1,2,CHEN Hong2,4 & WANG Wen1 1. CAS-Max Planck Junior Scientist Group,Key Laboratory of Cellular and Molecular Evolution,Kunming Institute of Zoology,Kunming 650223,China, 2. College of Animal Science and Technology,Northwest Sci-Tech Uni-versity of Agriculture and Forestry,Yangling 712100,China, 3. Graduate School of the Chinese Academy of Sciences,Beijing 100039,China, 4. Institute of Biotechnology,Xuzhou Normal University,Xuzhou 221116,China |
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Abstract: | Organisms have variable genome sizes and contain different numbers of genes. This difference demon-strates that new gene origination is a fundamental process in evolutionary biology. Though the study of the origination of new genes dated back more than half a century ago, it is not until the 1990s when the first young gene jingwei was found that empirical investigation of the molecular mechanisms of origination of new genes became possible. In the recent years, several young genes were identified and the studies on these genes have greatly enriched the knowledge of this field. Yet more details in a general picture of new genes origination are to be clarified. We have developed a systematic approach to searching for young genes at the genomic level, in the hope to summarize a general pattern of the origination and evolution of new genes, such as the rate of new gene appearance, im-pact of new genes on their host genomes, etc. |
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Keywords: | new genes origin evolution molecular mechanism posi-tive selection |
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