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Molecular Basis of Inheritance

ICSE · Class 12 · Biology

Step-by-step guide to study Molecular Basis of Inheritance in ICSE Class 12 Biology. Topics to cover, practice strategy, and time allocation.

130 questions45 flashcards5 concepts

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A flowchart illustrating the sequential steps involved in DNA fingerprinting (DNA profiling), from DNA isolation to the detection of hybridized DNA fragments, including restriction digestion, gel elec
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 130 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Molecular Basis of Inheritance after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • Gene = unit of heredity and information
  • Johannsen coined the term gene in 1909
  • Cistron, muton, and recon are sub-units of a gene

  • DNA is the main genetic material
  • RNA is genetic material in some viruses
  • Griffith discovered transformation

  • Nucleotide = base + sugar + phosphate
  • Purines: adenine and guanine
  • Pyrimidines: cytosine and thymine

Common Mistakes to Avoid

DNA is always the genetic material in every organism and virus.

Griffith proved that DNA is the transforming principle.

Hershey and Chase used bacteria to prove that protein is the genetic material.

Memory Tips

Definition of gene

W. Johannsen coined the term gene in 1909

Cistron, recon, muton

Order of gene sub-units by size

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Frequently Asked Questions

What are the important topics in Molecular Basis of Inheritance for ICSE Class 12 Biology?
Key topics in Molecular Basis of Inheritance include DNA as Genetic Material — Key Experiments, Meselson-Stahl Experiment, DNA Structure Key Numbers. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Molecular Basis of Inheritance — ICSE Class 12 Biology?
Understand the core concepts first, then work through the 130 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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