Which of the following statements is TRUE regarding primary transcripts?
A)In both eukaryotes and prokaryotes, primary transcripts are synonymous with mRNA.
B)In eukaryotes, a primary transcript can be transcribed and translated at the same time.
C)In prokaryotes, primary transcripts undergo polyadenylation and alternative splicing.
D)In both prokaryotes and eukaryotes, primary transcripts are polycistronic.
E)None of the other answer options is correct.

Question

Quizplus · Accepted Answer

None of the statements provided are true regarding primary transcripts. Primary transcripts are the initial RNA transcript synthesized from a DNA template before it is modified to become functional RNA, such as mRNA or tRNA. In eukaryotes, primary transcripts undergo extensive post-transcriptional modifications including capping, polyadenylation, and splicing before they can be exported to the cytoplasm and translated into protein. In prokaryotes, primary transcripts can be polycistronic and contain multiple open reading frames. However, primary transcripts are not synonymous with mRNA, cannot be transcribed and translated at the same time, and do not undergo alternative splicing.

Which of the Following Statements Is TRUE Regarding Primary Transcripts