The repressor gene and its allele-a temperature sensitive mutant have been cloned from the defective prophage PBSX of Bacillus subtilis by means of PCR technique.
本研究利用聚合酶链式反应技术，成功地克隆了枯草芽孢杆菌缺陷型原噬菌体PBSX阻遏基因及其温度敏感型等位基因。
The mechanism of this albescent phenomenon was discussed, and regarded that the mutation of temperature sensitive mutant is probably mutually controlled by the nuclear gene and nuclear cytoplasm.
文中对其返白机理进行了讨论，认为该温度敏感型突变体的突变很可能是由核基因或核质互作控制的。
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