eVidyarthi

MCQ Science and Technology Class 9 Chapter 16 Maharashtra Board

Heredity and Variation

1. How many genes are estimated in the human genome?

Question 1 of 20

2. What sugar is found in RNA?

Question 2 of 20

3. Which nitrogenous base is exclusive to RNA?

Question 3 of 20

4. Which RNA type is part of the ribosome?

Question 4 of 20

5. Which RNA carries protein synthesis information from the nucleus to ribosomes?

Question 5 of 20

6. Which RNA transports amino acids to ribosomes?

Question 6 of 20

7. Who established heredity principles using pea plants?

Question 7 of 20

8. What characteristic was studied in Mendel’s monohybrid cross?

Question 8 of 20

9. What is a cross with one pair of contrasting traits called?

Question 9 of 20

10. What was the dominant trait in Mendel’s monohybrid cross?

Question 10 of 20

11. What was the F1 generation phenotype in Mendel’s monohybrid cross?

Question 11 of 20

12. What is the genotypic ratio of the F2 generation in Mendel’s monohybrid cross?

Question 12 of 20

13. What is a cross involving two pairs of contrasting traits called?

Question 13 of 20

14. Which seed traits were dominant in Mendel’s dihybrid cross?

Question 14 of 20

15. How many gamete types do F1 plants produce in a dihybrid cross?

Question 15 of 20

16. What is the phenotypic ratio of the F2 generation in Mendel’s dihybrid cross?

Question 16 of 20

17. What are disorders due to chromosomal or gene abnormalities called?

Question 17 of 20

18. How many chromosomes do humans typically have?

Question 18 of 20

19. What is the chromosomal makeup of women?

Question 19 of 20

20. Which disorder results from trisomy of the 21st chromosome?

Question 20 of 20

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