Which of the following does NOT describe a part of post -transcriptional processing?
A) addition of a poly A tail at the 3' end
B) splicing of nucleic acid fragments
C) formation of bonds between a phosphate group and a sugar
D) removal of the introns from the strand
E) capping of the 5' end

Question

Quizplus · Accepted Answer

Formation of bonds between a phosphate group and a sugar is part of the nucleic acid polymerization process during transcription and DNA replication, not a post-transcriptional modification. Post-transcriptional processing involves modifications to the pre-mRNA transcript such as splicing, 5' capping, and polyadenylation (adding a poly A tail), but not the formation of the basic chemical bonds that make up the backbone of the RNA molecule.

Which of the Following Does NOT Describe a Part of Post