Complete the sentences below using the words and phrases on

Complete the sentences below using the words and phrases on the left, and then arrange the sentences in paragraph order to review the steps in DNA transcription in prokaryotes (Not all words and phrases are used.)

Solution

After binding to the promoter, RNA polymerase unwinds part of the DNA,exposing the template strand and forming an origin.

RNA polymerase then chooses two nucleotides with which to initiate copying; the two RNA nucleotides begin what is called transcription bubble.

Initiation begins when RNA polymerase, with a sigma subunit associated, recognises and binds to the promoter region of DNA, forming an open promoter complex.

The transcribed mRNA is released, marking the end of initiation.

In elongation, RNA polymerase continues to unwind the DNA and add to the growing mRNA chain in a moving region called 3\'end of the gene.

Termination occurrs when the terminator sequence in the 3\'end of the gene signals the RNA polymerase to stop transcription.

Explanation: The copying of the DNA sequence to make RNA molecule is called transcription. Transcription comprises of initiation, elongation and termination.