In eukaryotes, the regulation of gene expression could not be exerted at:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Transformational level
Gene expression ends in a polypeptide, so it can be regulated at several steps along the way.
(1) Transcriptional level — A level of regulation of gene expression in eukaryotes. Control here decides whether the primary transcript is formed.
(2) Transformational level — Not a level of regulation of gene expression in eukaryotes. There is no such level. “Transformation” is the entry of foreign DNA into a bacterium, which is a different idea.
(3) Processing level — A level of regulation of gene expression in eukaryotes. Here the splicing of the primary transcript is regulated.
(4) Transport of mRNA from nucleus to the cytoplasm — A level of regulation of gene expression in eukaryotes. The mRNA has to leave the nucleus before it can be translated.
NCERT Extract:
Regulation of Gene Expression –
