A geneticist finds that a strain of bacteria to produces a non-functional sigma factor. Which among the following steps in transcription would most likely be first affected? A. Assembly of RNAP onto the DNA strand

B. Identification and binding of RNAP on to the promoter sequence

C. Conversion of open initiation complex to closed initiation complex

D. Synthesis of RNA after the formation of open initiation complex

Answer

D

The transcription factors and RNA polymerase form a complex called the transcription initiation complex. This complex initiates transcription, and the RNA polymerase begins mRNA synthesis by matching complementary bases to the original DNA strand.

the peripheral nervous system or pns contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body. the peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the cns as quickly as possible.

anti-human il13 stable cell line (lebrikizumab) can be provided from creative biolabs.

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