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GS Paper IUPSC Prelims 2002
Health & Medicine
Question No. 461Interactive Test Mode
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Q461. Match List-I (Scientists) with List-II (Achievements) and select the correct answer using the codes given below: | List-I (Scientists) | List-II (Achievements) | | :--- | :--- | | 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 |

Match List-I (Scientists) with List-II (Achievements) and select the correct answer using the codes given below:

List-I (Scientists)List-II (Achievements)
A. Arber and Smith1. Developed transgenic plants with Agrobacterium T-DNA
B. Feldman2. Discovered endonucleases
C. Mullis3. Discovered reverse transcriptase
D. Temin and Baltimore4. Discovered polymerase chain reaction
Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2002 • Science and Technology

Correct Answer: Option (A) — A – 2; B – 1; C – 4; D – 3

Concept & Option Breakdown

Standard Reference Verified
  • Werner Arber and Hamilton Smith discovered restriction endonucleases (A matches with 2).
  • Kenneth Feldman developed insertional mutagenesis and transgenic plants using Agrobacterium T-DNA (B matches with 1).
  • Kary Mullis invented the Polymerase Chain Reaction (PCR) technique (C matches with 4).
  • Howard Temin and David Baltimore discovered the enzyme Reverse Transcriptase (D matches with 3).
Elimination Heuristic & Exam Approach

Kary Mullis is universally famous for inventing PCR (C-4). Temin & Baltimore discovered Reverse Transcriptase (D-3). This immediately singles out (a).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2002 (Q461)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — A – 2; B – 1; C – 4; D – 3

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Frequently Asked Questions — UPSC Prelims 2002 Q461

What is the official answer for UPSC Prelims 2002 GS Paper I Question 461 (Science and Technology)?

The official UPSC answer key for this 2002 Science and Technology (Health & Medicine) question is Option (A): "A – 2; B – 1; C – 4; D – 3". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2002 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

Kary Mullis is universally famous for inventing PCR (C4). Temin & Baltimore discovered Reverse Transcriptase (D3). This immediately singles out (a).

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