例句與造句

1. Many Pol II transcripts exist transiently as single strand precursor RNAs ( pre-RNAs ) that are further processed to generate mature RNAs.
2. He worked as a research assistant for James Darnell at MIT, where in 1962 he discovered the existence of giant rhybosomial and messenger RNA in animal cells, and observed for the first time the differentiation of pre-rhybosomic and functional rRNA . These discoveries made it possible to understand a fundamental process in cells, the production of precursor RNA that is then metabolized in order to extract the expressed information.
3. stRNAs exert negative post-transcriptional regulation by binding to complementary sequences in the 3'untranslated regions of their target genes . stRNAs are transcribed as longer precursor RNAs that are processed by the RNase Dicer / DCR-1 and members of the RDE-1 / AGO1 family of proteins, which are better known for their roles in RNA interference ( RNAi ) . stRNAs may function to control temporal identity during development in " C . elegans " and other organisms.
4. It's difficult to find precursor rna in a sentence. 用precursor rna造句挺難的