The epigenome is a molecular marking system that controls gene expression without altering the DNA sequence.
Image credit: Dreamstime观基因是在不改变DNA序列的前提下控制基因达的分子统。
Alternatively, a new version of a gene can also be created through reverse transcription: during gene expression, the mRNA is copied back into a sequence of DNA that is inserted into the genome.
其二,新的基因复本也可能透过反转录用,将基因现出来的mRNA反转录成DNA序列,再插回基因组内,这种现象称为反转录移位(retrotransposition),发生在细胞内称为长散布核因子(LINE)的转位子活动时。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。