Identify the correct sequence of regulation of gene expression in eukaryotes.
A. Translational level
B. Transport of mRNA from nucleus to the cytoplasm
C. Processing level
D. Transcriptional level
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → D, C, B, A
D. Transcriptional level — this comes first. The first control is on the making of the primary transcript from DNA.
C. Processing level — this comes second. The primary transcript is then processed. Splicing removes the introns and joins the exons.
B. Transport of mRNA from nucleus to the cytoplasm — this comes third. Only the processed mRNA is sent out of the nucleus.
A. Translational level — this comes last. In the cytoplasm the mRNA is read by ribosomes to make the protein.
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NCERT Extract:
Regulation of Gene Expression –
