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《Hereditas(Beijing)》 2005-01
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Gene Duplications Specific to the Amphioxus Lineage

WANG Wei~1, SU Bing~2, WANG Yi-Quan~1(1. College of Life Science, Xiamen University, Xiamen, 361005, China; 2. The Key Laboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, CAS, Kunming 650223, China)  
The union of the two complementary disciplines, developmental biology and evolutionary biology resulted in a new division of evolutionary developmental biology, namely "Evo-Devo". Recently, the research on this field has been fruitful in understanding the origin and development of vertebrates. The cephalochordate amphioxus, which remains in relatively invariant morphology since the divergence from the vertebrate lineage, is the closest living relative to vertebrates. The vertebrate-like simple body plan and preduplicative genome provide amphioxus genes the privilege to serve as key landmark to understand morphological (evolution.) However, the amphioxus genome has not escaped (evolution.) In this paper several examples of independent gene (Hox; Evx; HNF-3 and Calmodulin-like) duplications in the cephalochordate lineage were summarized. These particularities and oddities remind the fact that amphioxus is not an immediate ancestor of the vertebrates but 'only' the closest living relative to the ancestor, with a mix of prototypical and amphioxus-specific features in its genome.
【Fund】: 基金国家自然科学基金(No.30470938);; 教育部留学回国人员启动基金;; 厦门市科技计划项目(No.3502Z20042015);; 中国科学院昆明动物研究所细胞与分子进化重点实验室开放基金资助~~
【CateGory Index】: Q953
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