Insertion and deletion are evolutionary changes in sequence length of DNA and protein molecules. They can’t be identified exactly whether it is an insertion event or a deletion event because of lack of ancestral sequence information,so be jointly called indel.
插入和缺失(insertion and deletion)是DNA和蛋白质在进化过程中发生的序列长度上的改变,由于缺乏祖先序列的信息,不能肯定其到底是插入事件还是缺失事件,故统称之为增减(indel)。
参考来源 - 基因组水平的插入和缺失变异研究进展·2,447,543篇论文数据,部分数据来源于NoteExpress
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