Question

Name the three processes that commonly modify eukaryotic pre-mrna. select the three correct answers. select the three correct answers. termination 5' capping initiation 3' polyadenylation 5' polyadenylation 3' capping elongation intron splicing

Answer 1

Answer:

The correct answer would be 5' capping, 3' polyadenylation , and intron splicing.

In eukaryotes, transcription results in the formation of pre-mRNA which needs to be processed in order to become mRNA (messenger ribonucleotide).

The pre-mRNA processing include:

• Addition of 5'cap (usually modified guanine nucleotide) at the 5'-end of the RNA. It prevents the RNA degradation and also help in the attachment of ribosome for translation.

• Addition poly-adenine (poly-A) tail at the 3'-end of the RNA. It increases the stability of the RNA and helps in its export out of the nucleus.

• Lastly, splicing takes place which removes the introns and joins the exons. Alternative splicing can also take place in order to produce many mRNA from a single gene.