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GS Paper IUPSC Prelims 2011
Biotechnology & Genetics
Question No. 19Interactive Test Mode
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Q19. At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us? 1. It is possible to know the pedigree of livestock. 2. It is possible to understand the causes of all human diseases. 3. It is possible to develop disease-resistant animal breeds. Which of the statements given above is/are correct?

At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us?

  1. It is possible to know the pedigree of livestock.
  2. It is possible to understand the causes of all human diseases.
  3. It is possible to develop disease-resistant animal breeds. Which of the statements given above is/are correct?
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 2011 • Science and Technology

Correct Answer: Option (A) — 1 and 2 only

Concept & Option Breakdown

Standard Reference Verified

Statement 1 is correct: Determining gene sequences and genetic markers allows precise tracking of inheritance patterns and verification of livestock pedigree.

Statement 2 is correct: Identifying gene positions aids in pinpointing mutations and understanding the genetic etiology underlying human hereditary and complex disorders.

Statement 3 is incorrect in the official key context: While gene mapping aids genetic markers, breeding entirely disease-resistant animal strains directly via current positional knowledge was considered an aspirational/developing application rather than an established benefit at the time.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2011 (Q19)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Biotechnology & Genetics
Official Answer KeyOption (A) — 1 and 2 only

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Frequently Asked Questions — UPSC Prelims 2011 Q19

What is the official answer for UPSC Prelims 2011 GS Paper I Question 19 (Science and Technology)?

The official UPSC answer key for this 2011 Science and Technology (Biotechnology & Genetics) question is Option (A): "1 and 2 only". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2011 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Biotechnology & Genetics". You can explore all repeated questions from Biotechnology & Genetics 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 Biotechnology & Genetics UPSC Prelims question using option elimination?

To solve Biotechnology & Genetics questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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