Answer: Recombinant colonies do not produce colour.
- A Recombinant colonies produce a coloured product
- B Non-recombinant colonies fail to grow
- C Recombinant colonies do not produce colour
- D Both colony types appear identical
Correct answer: C. Recombinant colonies do not produce colour
Explanation: If the insert interrupts the enzyme-coding sequence, the enzyme is not produced, so recombinant colonies do not develop colour, while non-recombinants produce a coloured product.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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