Practice Chromosomal Disorders - 4.8.3 | 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

Define aneuploidy.

💡 Hint: Think about how many chromosomes a person should normally have.

Question 2

Easy

What is Down’s syndrome caused by?

💡 Hint: Recall the specific chromosome number related to this condition.

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

What is the primary cause of Down’s syndrome?

  • A. Missing chromosome
  • B. Extra chromosome 21
  • C. Extra chromosome 18

💡 Hint: Think about the specific chromosome involved.

Question 2

Turner’s syndrome results from an excess of which chromosome?

  • True
  • False

💡 Hint: Consider what happens to X chromosomes in Turner’s syndrome.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Analyze a family line where one member has Down’s syndrome. Discuss the genetic implications for future generations.

💡 Hint: Consider the likelihood of passing on the affected chromosome.

Question 2

Compare and contrast the symptoms and genetic backgrounds of Turner’s and Klinefelter’s syndromes.

💡 Hint: Focus on what each syndrome represents regarding chromosome numbers.

Challenge and get performance evaluation