UPSC Prelims 2002·GS1·science-and-technology·ipr and biotechnology

Match List I (Scientists) with List II (Achievement) and select the correct answer using the codes given below the lists: List I List II (Scientists) (Achievement) A. Arber and Smith 1. Developed transgenic plants with Agrobacterium T-DNA B. Feldman 2. Discovered endonucleases C. Mullis 3. Discovered reverse transcriptase D. Temin and Baltimore 4. Discovered polymerase chain reaction Codes:

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Last updated 23 May 2026, 3:31 pm IST
  1. A2 1 4 3Correct
  2. B1 2 4 3
  3. C2 1 3 4
  4. D1 2 3 4

Explanation

The correct matching is: A. Arber and Smith discovered restriction endonucleases, which are enzymes that cut DNA at specific sites. This matches with 2. B. Feldman is known for his work in plant biotechnology, specifically using Agrobacterium T-DNA for gene tagging and developing transgenic plants. This matches with 1. C. Mullis developed the Polymerase Chain Reaction (PCR) technique, which allows for the amplification of DNA sequences. This matches with 4. D. Temin and Baltimore discovered reverse transcriptase, an enzyme that synthesizes DNA from an RNA template. This matches with 3. The sequence 2-1-4-3 corresponds to Option A.
science-and-technology: Match List I (Scientists) with List II (Achievement) and select the correct answer using the codes given below the lists

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