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UPSC 2021: In the context of hereditary diseases, consider the following statements: 1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg. 2. A child inherits mitochondrial diseases entirely from mother and not from father. Which of the statements given above is/are correct?
(a)1 only
(b)2 only
(c)Both 1 and 2
(d)Neither 1 nor 2
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Not attemptedCorrect Answer: (c) Both 1 and 2
Mitochondrial-replacement techniques (maternal-spindle or pronuclear transfer) can be applied either before or after IVF to prevent transmission of faulty mitochondrial DNA. Because sperm mitochondria are destroyed after fertilization, a child’s mitochondria—and any mitochondrial disease—are inherited exclusively from the mother, making both statements true. ([testbook.com](https://testbook.com/question-answer/in-the-context-of-hereditary-diseases-consider-th--61629f355a038b847db27861?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2021 Science & Technology question?▼
The correct answer is option (c): Both 1 and 2. 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 2021, GS Paper 1, as Question 66. 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.