Identify the correct sequence involved in the regulation of gene expression in eukaryotes.
(A) Processing level
(B) Translational level
(C) Transcriptional level
(D) Transport of mRNA from nucleus to the cytoplasm
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (C), (A), (D), (B)
(C) Transcriptional level — first. The primary transcript is formed here. If a gene is not transcribed, nothing else can follow.
(A) Processing level — second. The primary transcript of a eukaryote is processed: introns are spliced out, and capping and tailing are done.
(D) Transport of mRNA from nucleus to the cytoplasm — third. Only the processed mRNA leaves the nucleus.
(B) Translational level — last. Translation happens in the cytoplasm, so it comes after the mRNA has been transported.
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NCERT Extract:
Regulation of Gene Expression –
