The lac operon. In the absence of lactose, the repressor protein encoded by the I gene binds to the lac operator and prevents transcription. Binding of allolactose to the repressor causes it to leave the operator. This enables RNA polymerase to transcribe the three genes of the operon.n the absence of lactose, the repressor protein encoded by the I gene binds to the lac operator and prevents transcription. Binding of allolactose to the repressor causes it to leave the operator.
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Software products. NCH Software provides software programs for audio, video, business, dictation and transcription, graphics, telephony and other utilities. On September 26, 2014, cnet.com showed their most-frequently downloaded program from NCH Software was WavePad Sound Editor Masters Edition. VideoPad is a video editing application developed by NCH Software for the home and professional market. VideoPad