The consensus DNA sequence for a promoter is made up of two sequences that are 7 bp long. If two actual promoters in the genome each differ by 3 bases from the consensus sequence, but at different positions. Which of the following can you conclude about transcription from the two promoters?

A.
One of the two will almost certainly show higher levels of transcription but it can't be guessed which one.
B.
Transcription levels from the two promoters will be roughly equal.
C.
There is not enough information to allow any conclusions to be made.
D.
In both cases the transcription will be far too low to tell the difference between them.

Question

The consensus DNA sequence for a promoter is made up of two sequences that are 7 bp long. If two actual promoters in the genome each differ by 3 bases from the consensus sequence, but at different positions. Which of the following can you conclude about transcription from the two promoters?

A.	
One of the two will almost certainly show higher levels of transcription but it can't be guessed which one.
	 B.	
Transcription levels from the two promoters will be roughly equal.
	 C.	
There is not enough information to allow any conclusions to be made.
	 D.	
In both cases the transcription will be far too low to tell the difference between them.