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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?

UPSC · 2021 · Environment & Science & Tech
Question:
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?

Options

1 only
2 only
Both 1 and 2
Neither 1 nor 2
Answer: Both 1 and 2

Explanation:
Mitochondrial replacement therapy can help prevent transmission of mitochondrial diseases. Mitochondria are inherited exclusively from the mother’s egg cell.

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