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UPSC 2001: Which of the following features of DNA makes it uniquely suited to store and transmit genetic information from generation to generation?
(a)Complementarity of the two strands
(b)Double helix
(c)Number of base pairs per turn
(d)Sugar phosphate backbone
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Not attemptedCorrect Answer: (a) Complementarity of the two strands
Complementary base-pairing (A-T and G-C) lets each DNA strand serve as a template during replication, ensuring faithful storage and transmission of genetic information across generations. The double helix shape, helical pitch and sugar-phosphate backbone are important structurally but do not by themselves guarantee accurate copying. ([licchavilyceum.com](https://licchavilyceum.com/upsc-civil-services-prelims-2001-solved-question-paper/))
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Frequently Asked Questions
What is the correct answer to this UPSC 2001 Science & Technology question?▼
The correct answer is option (a): Complementarity of the two strands. 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 2001, GS Paper 1, as Question 129. 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.