哺乳动物的反转录转座子及其在进化中的作用

The retroposon in mammals′genomes and its significances in evolution

哺乳动物基因组中整合了大量反转录转座子 .根据它们的结构特点和起源 ,对反转录转座子的分类、扩增途径和扩增酶学进行了探讨 ,提出了反转录转座子本身的进化方向及其在基因组进化中的作用 .依据原祖 7SLRNA演化为人类 Alu家族的过程 ,讨论了

Retroposons exist in mammals' genomes in large amount.In the light of their structure and origin,the classification of retroposons was made,the amplification process of them was discussed,and evolutionary process of retroposons and their functions in genomes' evolution are put forward.According to the evolutionary process of ancestor 7SLRNA to human Alu family,Alu sequences' function in gene express regulation is discussed.