Consensus sequences (short segments of DNA) appear in the boundaries between introns and exons of various genes. These sequences appear to be involved in
A) directing the polymerases to the appropriate place on the DNA for transcription to begin.
B) the splicing of introns out of the DNA.
C) allowing the transcription to stop at the appropriate spot.
D) catalyzing the synthesis of a protein.
E) None of the above

Question

Quizplus · Accepted Answer

Consensus sequences are involved in the splicing of introns out of the DNA, specifically by signaling to the spliceosome where to make cuts in the RNA during splicing. They do not direct polymerases to the appropriate place for transcription or catalyze protein synthesis. They also do not play a direct role in transcription stopping at the appropriate spot.

Consensus Sequences (Short Segments of DNA) Appear in the Boundaries