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GS Paper IUPSC Prelims 2001
Health & Medicine
Question No. 470Interactive Test Mode
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+2-0.66

Q470. Match List-I with List-II and select the correct answer using the codes given below: | List-I (Achievement in genetics) | List-II (Scientists) | | :--- | :--- | | A. Discovery of transduction and conjugation in bacteria | 1. Khurana | | B. Establishing the sex-linked inheritance | 2. Kornberg | | C. Isolation of DNA polymerase from E. coli | 3. Lederberg | | D. Establishing the complete genetic code | 4. Morgan | | | 5. Ochoa | Codes:

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

List-I (Achievement in genetics)List-II (Scientists)
A. Discovery of transduction and conjugation in bacteria1. Khurana
B. Establishing the sex-linked inheritance2. Kornberg
C. Isolation of DNA polymerase from E. coli3. Lederberg
D. Establishing the complete genetic code4. Morgan
5. Ochoa

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 2001 • Science and Technology

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

Concept & Option Breakdown

Standard Reference Verified

• A is matched with 3: Joshua Lederberg (with Edward Tatum and Norton Zinder) discovered bacterial conjugation and genetic transduction. • B is matched with 4: Thomas Hunt Morgan discovered sex-linked inheritance using the fruit fly Drosophila melanogaster. • C is matched with 2: Arthur Kornberg isolated DNA polymerase I from Escherichia coli in 1956. • D is matched with 1: Har Gobind Khorana (with Nirenberg and Holley) deciphered the genetic code and demonstrated how nucleotide triplets code for specific amino acids.

Elimination Heuristic & Exam Approach

Indian Nobel laureate Har Gobind Khorana is renowned for cracking the genetic code (D-1). T.H. Morgan is the father of experimental genetics/sex linkage (B-4). This points directly to (d).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2001 (Q470)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (D) — A – 3; B – 4; C – 2; D – 1

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Frequently Asked Questions — UPSC Prelims 2001 Q470

What is the official answer for UPSC Prelims 2001 GS Paper I Question 470 (Science and Technology)?

The official UPSC answer key for this 2001 Science and Technology (Health & Medicine) question is Option (D): "A – 3; B – 4; C – 2; D – 1". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2001 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?

Indian Nobel laureate Har Gobind Khorana is renowned for cracking the genetic code (D1). T.H. Morgan is the father of experimental genetics/sex linkage (B4). This points directly to (d).

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