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GS Paper IUPSC Prelims 2019
Biotechnology & Genetics
Question No. 9Interactive Test Mode
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Q9. With reference to the recent developments in science, which one of the following statements is not correct?

With reference to the recent developments in science, which one of the following statements is not 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 2019 • Science and Technology

Correct Answer: Option (A) — Functional chromosomes can be created by joining segments of DNA taken from cells of different species.

Concept & Option Breakdown

Standard Reference Verified

Option (a) is incorrect: While recombinant DNA allows moving specific genes across species, full functional eukaryotic chromosomes have intricate architectures (telomeres, centromeres, epigenetic regulation) that cannot be generated merely by randomly splicing together segments of DNA from different species. Option (b) is correct: Functional artificial/synthetic DNA fragments have been successfully synthesized chemically in laboratories. Option (c) is correct: Cell-free in vitro DNA amplification is standard via Polymerase Chain Reaction (PCR). Option (d) is correct: In vitro tissue and cell culture in petri dishes regularly facilitates mitotic cell division of plant and animal cells under appropriate growth conditions.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2019 (Q9)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Biotechnology & Genetics
Official Answer KeyOption (A) — Functional chromosomes can be created by joining segments of DNA taken from cells of different species.

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Frequently Asked Questions — UPSC Prelims 2019 Q9

What is the official answer for UPSC Prelims 2019 GS Paper I Question 9 (Science and Technology)?

The official UPSC answer key for this 2019 Science and Technology (Biotechnology & Genetics) question is Option (A): "Functional chromosomes can be created by joining segments of DNA taken from cells of different species.". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2019 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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