Steps of Transcription - Elongation

Question 1

Step 1 - elongation

Answer 1

RNA polymer moves and unwinds DNA creating an elongation bubble.

Question 2

Step 2 - elongation

Answer 2

Nucleotides are added by Watson-Crick pairing.

Question 3

Step 3 - elongation

Answer 3

RNA-DNA hybrid molecule starts to form in elongation bubble

Question 4

Step 4 - elongation

Answer 4

RNA is synthesised in the 5’ to 3’ direction until the termination site.