Question

Which of the following statements is not true of the lac operon promoter? Which of the following statements is not true of the lac operon promoter? RNA polymerase binds to this promoter weakly in the absence of CAP. RNA polymerase and LacI repressor protein cannot bind to the promoter DNA simultaneously. CAP has an activating region that helps recruit RNA polymerase to this promoter. The -35 sequence deviates from the consensus sequence for sigma 70 promoters. The promoter has an UP-element that directly binds to the alpha subunit of RNA polymerase..

Answer 1

The correct answer is the -35 sequence deviates from the consensus sequence for sigma 70 promoters.

Step-by-step explanation:

The -10 and -35 are the two most important promoter region present in upstream region of prokaryotic DNA.

The -35 promoter region contain a consensus sequence TTGACA

This sequence never deviates from the its original position for sigma 70 promoters.During transcription RNA polymerase enzyme itself moves along the template DNA strand to copy the genetic information present within the DNA molecule which result in the formation of bases in the mRNA molecule and these base sequences are complementary to that of template DNA strand.