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UPSC 2022: Consider the following statements: DNA Barcoding can be a tool to: 1. assess the age of a plant or animal. 2. distinguish among species that look alike. 3. identify undesirable animal or plant materials in processed foods. Which of the statements given above is/are correct?
(a)1 only
(b)3 only
(c)1 and 2
(d)2 and 3
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Not attemptedCorrect Answer: (d) 2 and 3
DNA barcoding identifies species by analysing short, standard gene regions; it cannot determine the chronological age of an organism (statement 1 wrong). It is routinely used to distinguish morphologically similar species (statement 2) and to detect unwanted animal or plant ingredients in processed foods (statement 3). Therefore only statements 2 and 3 are correct. ([testbook.com](https://testbook.com/question-answer/consider-the-following-statementsdna-barcoding--629df52a2b879d0aaa381714?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2022 Science & Technology question?▼
The correct answer is option (d): 2 and 3. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Biotechnology & Genetics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2022, GS Paper 1, as Question 99. It falls under Science & Technology > Biotechnology & Genetics.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Biotechnology & Genetics?▼
UPSC has asked 54 questions from Biotechnology & Genetics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.