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MCQ Science and Technology Class 9 Chapter 16 Maharashtra Board

Heredity and Variation

1. What is a key feature of Down syndrome?

Question 1 of 20

2. What chromosomal condition causes Turner syndrome?

Question 2 of 20

3. What is a symptom of Turner syndrome?

Question 3 of 20

4. Which disorder affects men with a 44+XXY condition?

Question 4 of 20

5. What characterizes Klinefelter syndrome?

Question 5 of 20

6. What type of disorder results from a single gene mutation?

Question 6 of 20

7. Which disorder involves a lack of melanin production?

Question 7 of 20

8. What causes sickle-cell anaemia?

Question 8 of 20

9. What is a symptom of sickle-cell anaemia?

Question 9 of 20

10. How is sickle-cell anaemia primarily transmitted?

Question 10 of 20

11. Which test diagnoses sickle-cell anaemia under the National Health Mission?

Question 11 of 20

12. What is a recommended remedy for sickle-cell anaemia?

Question 12 of 20

13. Which disorder is inherited solely from the mother due to mitochondrial DNA?

Question 13 of 20

14. Which disorder involves mutations in multiple genes?

Question 14 of 20

15. Which is an example of a polygenic disorder?

Question 15 of 20

16. What harmful substance in tobacco affects the nervous system?

Question 16 of 20

17. What health issue can excessive tobacco consumption cause?

Question 17 of 20

18. What causes uncontrolled cell division leading to cancer in tobacco users?

Question 18 of 20

19. What physical effect does smoking have on arteries?

Question 19 of 20

20. What is a visual disorder associated with excessive tobacco chewing?

Question 20 of 20

MCQ
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