Which of the Following is an Example of Post-Transcriptional Control

Question

Which of the following is an example of post-transcriptional control of gene expression?
A)the addition of methyl groups to cytosine bases of DNA
B)the binding of transcription factors to a promoter
C)the removal of introns and alternative splicing of exons
D)gene amplification contributing to cancer
E)the folding of DNA to form heterochromatin

Accepted Answer

Post-transcriptional control of gene expression involves processes that occur after mRNA synthesis, such as alternative splicing of exons, removal of introns, RNA editing, and regulation of mRNA stability. Choice C is the only option that describes post-transcriptional control. The other choices describe pre-transcriptional control (A, B, E) or mechanisms that do not directly relate to gene expression regulation (D).