Question

The structural gene in transcription unit is monocistronic and polycistronic respectively in:
[0.7 mark]

• A. Most of the unicellular organisms and most of the multicellular organisms
• B. Most of the eukaryotes and most of the prokaryotes
• C. Some prokaryotes and most of the eukaryotes
• D. All animals and all plants

Answer 1

The correct option is B Most of the eukaryotes and most of the prokaryotes

In most of the eukaryotes, the structural gene in a transcription unit is monocistronic whereas in most of the prokaryotes, it is polycistronic.
Monocistronic gene synthesises one type of polypeptide protein. Polycistronic gene synthesises different polypeptides.