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GS Paper IUPSC Prelims 2023
Biotechnology & Genetics
Question No. 4Interactive Test Mode
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+2-0.66

Q4. ‘Microsatellite DNA’ is used in the case of which one of the following?

‘Microsatellite DNA’ is used in the case of which one of the following?

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 2023 • Science and Technology

Correct Answer: Option (A) — Studying the evolutionary relationships among various species of fauna

Concept & Option Breakdown

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Microsatellite DNA (or Short Tandem Repeats - STRs) consists of short, repeated sequences of 1–6 base pairs in DNA. Due to their high polymorphism and mutation rates, they serve as genetic markers to evaluate genetic diversity, population genetics, and evolutionary relationships among different species and populations.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2023 (Q4)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Biotechnology & Genetics
Official Answer KeyOption (A) — Studying the evolutionary relationships among various species of fauna

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Frequently Asked Questions — UPSC Prelims 2023 Q4

What is the official answer for UPSC Prelims 2023 GS Paper I Question 4 (Science and Technology)?

The official UPSC answer key for this 2023 Science and Technology (Biotechnology & Genetics) question is Option (A): "Studying the evolutionary relationships among various species of fauna". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2023 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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