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作用,将基因表
出来的mRNA
成DNA序列,再插回基因组内,这种
象称为
移位(retrotransposition),发生在细胞内称为长散布核因
(LINE)的
位
时。