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UPSC 2002: With reference to the latest developments in stem-cell research, consider the following statements: 1. The only source of human stem cells are the embryos at blastocyst stage. 2. The stem cells can be derived without causing destruction to blastocysts. 3. The stem cells can regenerate themselves in vitro virtually forever. 4. Indian research centres also created a few cell lines which can be developed into many types of tissues. Which of these statements are correct?
(a)1, 2, 3 and 4
(b)1, 2 and 3
(c)1, 2 and 4
(d)3 and 4
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Not attemptedCorrect Answer: (d) 3 and 4
In 2002 it was already known that adult tissues (e.g., bone-marrow, umbilical cord blood) also contain stem cells, so statement 1 is wrong. Harvesting embryonic stem cells then required destroying the blastocyst, so statement 2 is wrong. Embryonic stem-cell lines are capable of indefinite self-renewal in vitro (statement 3 true) and Indian groups such as NCCS-Pune and CCMB-Hyderabad had established pluripotent cell lines by 2001 (statement 4 true). Hence only 3 and 4 are correct. ([educationprovince.com](https://educationprovince.com/8c-biotechnology-prelims-pyqs/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2002 Science & Technology question?▼
The correct answer is option (d): 3 and 4. 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 2002, GS Paper 1, as Question 7. 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.