Shanxi Formation is a set of paralic continental deposit,of which,fluvial,swamp and lacustrine facies alternatively presented regularly.
山西组为一套近海型陆相沉积,其中河流相、沼泽相及湖泊相有规律地交。
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,基因本也可能透过反转录作用,将基因表来mRNA反转录成DNA序列,再插回基因组内,这种象称为反转录移位(retrotransposition),发生在细胞内称为长散布核因子(LINE)转位子活动时。
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