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UPSC 2019: With reference to the recent developments in science, which one of the following statements is not correct?
(a)Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
(b)Pieces of artificial functional DNA can be created in laboratories.
(c)A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
(d)Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes.
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Not attemptedCorrect Answer: (a) Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
Scientists can synthesise functional stretches of DNA in the lab (statement b), replicate isolated DNA outside living cells through PCR/other systems (statement c) and culture plant/animal cells to divide in vitro (statement d). However, creating a single functional chromosome by splicing DNA segments from different species is not yet feasible; inter-species chromosome hybrids are non-functional or lethal, so statement a is incorrect and thus the ‘NOT correct’ choice. ([sprintupsc.com](https://sprintupsc.com/PreviousYearsWeb/upsc-prelims-2019-answer-key.html?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2019 Science & Technology question?▼
The correct answer is option (a): Functional chromosomes can be created by joining segments of DNA taken from cells of different species.. 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 2019, GS Paper 1, as Question 93. It falls under Science & Technology > Biotechnology & Genetics.
What is the difficulty level of this UPSC question?▼
This question is rated "difficult". It is a challenging question that demands deep subject knowledge and analytical thinking.
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.