Question

B is an intron between two exons, A and C. Which representation best describes how this region of mRNA will appear after it is transcribed and processed by a spliceosome?

a) A-B-C
b) ABC
c) ACB
d) AB

Answer 1

After transcription and processing by a spliceosome, the mRNA region containing the intron between exons A and C will appear as A-B-C (option a). The correct option is a) A-B-C

Step-by-step explanation:

After transcription and processing by a spliceosome, the mRNA region containing the intron between exons A and C will appear as A-B-C (option a).

During splicing, the spliceosome removes the intron and connects the exons together to form the mature mRNA molecule. The intron is a non-coding region and is not included in the final mRNA product. Therefore, the correct representation is A-B-C, where A and C represent the exons and B represents the removed intron.

Overall, the splicing process ensures that the mRNA contains only the coding regions (exons) and removes the non-coding regions (introns) to generate a functional mRNA molecule for protein synthesis. The correct option is a) A-B-C