知识贝壳
知识贝壳
所属栏目：英汉双解细胞与分子生物学
1.A‘back-up’mechanismthat helps to regulate gene expression in bac-terial OPERONS. An operon has a leader se-quence,which lies downstream of theoperons promotor and operator sites,but be-fore the start of the structural genes. An at-tenuator site is a seg ......（本文共 1326 字 ） [阅读本文] >>