Observe the given figure and answer the question.
What does the given diagram show?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Process of transcription in Eukaryotes
The figure shows an RNA copy being made from DNA and then processed: a cap (mGppp) is added at the 5' end, introns (loops) are removed and a tail is added at the 3' end. Such processing of hnRNA happens only in eukaryotes.
Option (1) Post transcriptional processing of RNA in Prokaryotes — Incorrect. Bacterial mRNA needs no processing; bacterial genes have no introns.
Option (2) Termination of translation — Incorrect. The figure shows RNA being made from DNA, not a protein being made.
Option (3) Process of transcription in Prokaryotes — Incorrect. There is no capping, splicing or tailing in prokaryotes.
Option (4) Process of transcription in Eukaryotes — Correct. The diagram shows a split gene being transcribed: the primary transcript (hnRNA) has exons and introns, the introns are removed by splicing, and the mRNA gets a cap and tail. These steps are seen only in eukaryotes.