retrotransposition

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，新因复本也可能透过录作用，将因表现出mRNA录成DNA序列，再插回因组内，这种现象称录移位（retrotransposition），发生在细胞内称长散布核因子（LINE）位子活动时。