Welcome to Science Coat your trusted platform for NEET preparation! Genetics is a crucial topic for NEET aspirants, and mastering it can significantly boost your score. To help you excel, we’ve prepared a challenging mock test with 15 hard-level questions on genetics. Each question is designed to test your conceptual understanding and problem-solving skills. Let’s dive in!

NEET 2025 Genetics Mock Test: 15 Hard-Level Questions with Answers

NEET 2025 Genetics Mock Test: 15 Hard-Level Questions with Answer Key

Question 1

What is the probability of obtaining a heterozygous offspring from a cross between two heterozygous parents for a single gene trait?

(a) 25%
(b) 50%
(c) 75%
(d) 100%

Answer: (b) 50%

Question 2

In a dihybrid cross, what is the phenotypic ratio of the offspring if the genes are linked and show 20% recombination?

(a) 9:3:3:1
(b) 3:1
(c) 8:1:1:6
(d) 1:1:1:1

Answer: (c) 8:1:1:6

Question 3

Which of the following disorders is caused by a single gene mutation?

(a) Down syndrome
(b) Sickle-cell anemia
(c) Turner syndrome
(d) Klinefelter syndrome

Answer: (b) Sickle-cell anemia

Question 4

What is the expected genotypic ratio in the F2 generation of a monohybrid cross?

(a) 3:1
(b) 1:2:1
(c) 9:3:3:1
(d) 1:1

Answer: (b) 1:2:1

Question 5

Which of the following is an example of codominance?

(a) Blood group AB
(b) Sickle-cell anemia
(c) Hemophilia
(d) Albinism

Answer: (a) Blood group AB

Question 6

What is the function of the Hardy-Weinberg equation in population genetics?

(a) To calculate mutation rates
(b) To determine allele frequencies in a population
(c) To study genetic drift
(d) To analyze natural selection

Answer: (b) To determine allele frequencies in a population

Question 7

Which of the following is an example of a sex-linked recessive disorder?

(a) Down syndrome
(b) Hemophilia
(c) Sickle-cell anemia
(d) Turner syndrome

Answer: (b) Hemophilia

Question 8

What is the probability of producing a homozygous recessive offspring from a cross between two heterozygous parents?

(a) 25%
(b) 50%
(c) 75%
(d) 100%

Answer: (a) 25%

Question 9

Which of the following is an example of incomplete dominance?

(a) Red and white flowers producing pink flowers
(b) Blood group AB
(c) Sickle-cell anemia
(d) Albinism

Answer: (a) Red and white flowers producing pink flowers

Question 10

What is the chromosomal basis of Klinefelter syndrome?

(a) 45, XO
(b) 47, XXY
(c) 46, XY
(d) 47, XYY

Answer: (b) 47, XXY

Question 11

What is the probability of obtaining a male child with hemophilia if the mother is a carrier and the father is normal?

(a) 0%
(b) 25%
(c) 50%
(d) 100%

Answer: (c) 50%

Question 12

Which of the following is NOT a chromosomal disorder?

(a) Down syndrome
(b) Turner syndrome
(c) Sickle-cell anemia
(d) Klinefelter syndrome

Answer: (c) Sickle-cell anemia

Question 13

What is the phenotypic ratio of a dihybrid cross in the F2 generation?

(a) 3:1
(b) 9:3:3:1
(c) 1:2:1
(d) 1:1

Answer: (b) 9:3:3:1

Question 14

Which of the following is an example of a polygenic trait?

(a) Blood group
(b) Skin color
(c) Hemophilia
(d) Albinism

Answer: (b) Skin color

Question 15

What is the role of a test cross in genetics?

(a) To determine the genotype of an individual
(b) To study genetic drift
(c) To analyze mutation rates
(d) To calculate allele frequencies

Answer: (a) To determine the genotype of an individual

Conclusion

This mock test is a great way to challenge your understanding of genetics for NEET 2025. Practice these questions thoroughly, and don’t forget to review the explanations to strengthen your concepts. For more such resources, stay tuned to Science coat. Good luck with your NEET preparation!

NEET 2025 Genetics Mock Test: 15 Hard-Level Questions with Answers

NEET 2025 Genetics Mock Test: 15 Hard-Level Questions with Answer Key