初级转录产物 meaning in Chinese

primary transcripts

But polyadenylation in bacteria needs no specific consensus sequence or there is no such sequence signals found . the sites of polyadenylation of bacterial mrna are diverse , including the 3 ' ends of primary transcripts , the sites of endonucleolytic processing in the 3 ' untranslatd and intercistronic regions , and sites within the coding regions of mrna degradation products
细菌mrna多聚腺苷酸化的位点多种多样，包括初级转录产物的3 ’末端， 3 ’端非翻译区和顺反子间区的内切酶加工位点及mrna降解产物的编码区内，其腺苷酸化相对无特异性、无选择性。