- A Resist insect pests through an introduced bacterial toxin gene from Bt
- B Resist herbicide application during routine field cultivation practices
- C Have delayed ripening and softening (antisense polygalacturonase)
- D Produce elevated levels of vitamin A within the ripened fruit tissue
Correct answer: C. Have delayed ripening and softening (antisense polygalacturonase)
Explanation: Flavr Savr tomato (1994): first GM food. Antisense gene for polygalacturonase (cell-wall degrading enzyme) introduced, delaying softening and extending shelf life.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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