Which of the following contains the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes?
A) 5′-capping, 3′-poly(A) tail addition, splicing
B) 3′-capping, 5′-poly(A) tail addition, splicing
C) removal of exons, insertion of introns, capping
D) 5′-poly(A) tail addition, insertion of introns, capping
E) heteroduplex formation, base modification, capping

Question

Quizplus · Accepted Answer

The three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes are 5′-capping (addition of a modified guanine nucleotide to the 5′ end), 3′-poly(A) tail addition (addition of a string of adenine nucleotides to the 3′ end), and splicing (removal of introns and joining of exons). Option A contains all three modifications, while the other options do not.

Which of the Following Contains the Three Posttranscriptional Modifications Often