Heredity and Variation
Maharashtra Board · Class 9 · Science
Most important questions from Heredity and Variation for Maharashtra Board Class 9 Science board exam 2026. MCQs, short answer, and long answer questions with marks.
Interactive on Super Tutor
Studying Heredity and Variation? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for important questions and more.
1,000+ Class 9 students started this chapter today
Sample Questions
Which of the following are components of DNA? (Select all correct answers)
Show answer
Adenine, Guanine, Cytosine, Thymine
DNA contains four nitrogenous bases: Adenine (A), Guanine (G), Cytosine (C), and Thymine (T). Uracil is found in RNA, not DNA.
Dominant genes are represented by ______ letters and recessive genes by ______ letters.
Down syndrome is caused by an extra chromosome in which pair?
Show answer
21st pair
Down syndrome is caused by trisomy of the 21st chromosome, meaning there are three copies of chromosome 21 instead of two.
Which type of reproduction shows greater variation in offspring?
Show answer
Sexual reproduction
Sexual reproduction produces greater variation because offspring receive genetic material from both parents, while asexual reproduction produces offspring identical to the parent.
+38 more questions available
Practice AllFrequently Asked Questions
What are the important topics in Heredity and Variation for Maharashtra Board Class 9 Science?
How to score full marks in Heredity and Variation — Maharashtra Board Class 9 Science?
How many important questions are there in Heredity and Variation?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Heredity and Variation
Practice Quiz
Test yourself with a quick quiz
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Heredity and Variation chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Maharashtra Board Class 9 Science.