Question

Post-transcriptional regulation includes:
A. Binding of repressor on silencer regions.
B. Transport of messenger RNA into the cytoplasm.
C. Decreasing messenger RNA stability in the cytoplasm.
D. Both (B) and (C)

Answer 1

Hint: One mRNA molecule can produce several proteins, making RNA transcription an effective control point. Eukaryotes have an additional degree of regulation provided by transcript processing, which is made possible by the presence of a nucleus.

Complete step by step solution:
The process of altering a freshly generated primary RNA transcript into a mature RNA molecule is known as post-transcriptional modification. The right RNA transcripts and proteins are generated and translated thanks to post-transcriptional changes. The real transcriptome supporting the cold stress response is defined by post-transcriptional mechanisms based on alternative splicing, RNA processing, RNA silencing, and other mechanisms. Ubiquitination and sumoylation are examples of post-translational changes that control the activity of already-existing molecules.
One process that lowers the expression of a particular gene is post-transcriptional gene silencing (PTGS), which involves the degradation of particular messenger RNAs. In all situations, degraded mRNA reduces gene expression. PTGS goes by several names, including cosuppression in plants, quelling in fungi, and RNA interference in animals. An RNA primary transcript is chemically altered after transcription from a gene to form a mature, functioning RNA molecule through a series of biological processes known as post-transcriptional modification or co-transcriptional modification. The real transcriptome supporting the cold stress response is defined by post-transcriptional mechanisms based on alternative splicing, RNA processing, RNA silencing, and other mechanisms. Ubiquitination and sumoylation are examples of post-translational changes that control the activity of already-existing molecules.
So, option (D) is correct.

Note:
A newly transcribed primary RNA transcript (hnRNA) can undergo post transcriptional alterations, which take place after transcription but before the hnRNA is translated into a protein product.