Multiple choice

Which of the following events does not occur in alternative splicing during gene expression?

  1. The exons to be retained in the mRNA are determined during the splicing process.

  2. U3 is not involved in mRNA splicing.

  3. Each intron has GU at its 3' end.

  4. Splicing is regulated by trans-acting proteins.

  5. Splicing silencers are sites to which splicing repressor proteins bind.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The typical eukaryotic nuclear intron has consensus sequences defining important regions. cc Near the 3' end there is a branch site.

Keep practicing — related questions