Practice Principles of Inheritance and Variation - 4 | 4. Principles of Inheritance and Variation | CBSE Grade-12 Biology
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What organism did Mendel use in his experiments?

💡 Hint: Think of the plant that has easy observable traits.

Question 2

Easy

Define dominant and recessive traits.

💡 Hint: Which trait would show up when combined?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

Which of the following describes Mendel's Law of Dominance?

  • Both alleles are expressed
  • Only one allele is expressed
  • Neither allele is expressed

💡 Hint: Consider which trait you would see in the plant.

Question 2

True or False: Genetic disorders cannot be inherited.

  • True
  • False

💡 Hint: Recall some disorders mentioned in class.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A researcher crosses two pea plants, one homozygous dominant for tallness (TT) and one homozygous recessive (tt). What are the expected genotypic and phenotypic ratios in the F1 generation?

💡 Hint: Think about what traits the homozygous plants contribute.

Question 2

If a couple both carry the allele for cystic fibrosis (recessive), what is the probability that their child will have the disorder?

💡 Hint: Use a Punnett square to visualize the crosses.

Challenge and get performance evaluation