Put the following events of bacterial transcription in chronological order.
1) Sigma binds to the promoter region.
2) The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands.
3) Sigma binds to RNA polymerase.
4) Sigma is released.
5) Transcription begins.
A) 2, 3, 4, 5, 1
B) 2, 3, 1, 4, 5
C) 3, 1, 2, 5, 4
D) 3, 2, 1, 4, 5

Question

Quizplus · Accepted Answer

1) Sigma binds to the promoter region. 
2) The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 
3) Sigma binds to RNA polymerase. 
4) Sigma is released. 
5) Transcription begins. Therefore, the correct chronological order is 3, 1, 2, 5, 4. Choice C is the only option with this sequence.

Put the Following Events of Bacterial Transcription in Chronological Order