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GS Paper IUPSC Prelims 1998
Health & Medicine
Question No. 494Interactive Test Mode
00:00
+2-0.66

Q494. Match List-I with List-II and select the correct answer using the codes given below the lists: | List-I | List-II | | :--- | :--- | | A. Theory of mutation | 1. Beadle and Tatum | | B. Theory of evolution | 2. Jacob and Monad | | C. One gene one enzyme | 3. Darwin hypothesis | | D. Operon concept | 4. de Vries | Codes:

Match List-I with List-II and select the correct answer using the codes given below the lists:

List-IList-II
A. Theory of mutation1. Beadle and Tatum
B. Theory of evolution2. Jacob and Monad
C. One gene one enzyme3. Darwin hypothesis
D. Operon concept4. de Vries

Codes:

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 1998 • Science and Technology

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

Concept & Option Breakdown

Standard Reference Verified

• Theory of mutation was proposed by Hugo de Vries (A-4). • Theory of evolution through natural selection was given by Charles Darwin (B-3). • One gene-one enzyme hypothesis was formulated by George Beadle and Edward Tatum (C-1). • Operon concept of gene regulation was elucidated by François Jacob and Jacques Monod (D-2).

Elimination Heuristic & Exam Approach

Darwin is universally associated with the Theory of Evolution (B-3), and de Vries with Mutation theory (A-4), directly confirming option (b).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 1998 (Q494)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — A – 4; B – 3; C – 1; D – 2

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Frequently Asked Questions — UPSC Prelims 1998 Q494

What is the official answer for UPSC Prelims 1998 GS Paper I Question 494 (Science and Technology)?

The official UPSC answer key for this 1998 Science and Technology (Health & Medicine) question is Option (B): "A – 4; B – 3; C – 1; D – 2". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 1998 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?

Darwin is universally associated with the Theory of Evolution (B3), and de Vries with Mutation theory (A4), directly confirming option (b).

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