| 文昌鱼-进化的模式动物 |
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| 引用本文： | 辛明.文昌鱼-进化的模式动物[J].福建农林大学学报(哲学社会科学版),2009(2). |
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| 作者姓名： | 辛明 |
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| 作者单位： | 山东理工大学生命科学院; |
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| 摘 要： | 文昌鱼是脊索动物门的代表生物,自它的发现后的很长一段时间,其演化地位就受到人们的关注和争议。近十几年,分子生物学研究结果表明,文昌鱼是现存生物中最近似于脊椎动物直接祖先的生物。不论从文昌鱼的内柱和脊椎动物甲状腺的同源关系还是特定的转录因子Hox基因与基因倍增,都有力地证明了文昌鱼与脊椎动物直接祖先极其接近,从而成为研究脊椎动物起源和进化的模式动物。从基因组及细微变化可以看出,它的进化也不是停滞不变的,但相比其他物种,文昌鱼更能提供脊椎动物早期起源的线索。
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| 关 键 词： | 文昌鱼 内柱 基因倍增 胚胎发育 |
Amphioxus as Evolutionary Model Animal |
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| Xin Ming.Amphioxus as Evolutionary Model Animal[J].Journal of Fujian Agriculture and Forestry University,2009(2). |
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| Authors: | Xin Ming |
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| Institution: | School of Life Sciences;Shandong University of Technology;Zibo 255049;P.R.China |
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| Abstract: | Amphioxus is the representative of phylum chordate.The evolution status of amphioxus has been concerned and disputed for a long time since it was been discovered .Over the last decade, molecular biology has been indicated that amphioxus is the most similar animal to ancestor of the existing vertebrates.Not only the homology of amphioxus endostyle and vertebrate thyroid, but also Hox genes and genome duplications can prove the similarity between amphioxus and the immediat ancestor of the vertebrates.Compared... |
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| Keywords: | amphioxus endostyle genome duplications embryonic development |
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