Principles of Inheritance & Variation Numericals | Class 12 Biology | Chapter 4 Numerical Revision

Описание: Welcome to Swastik Education Science Stream!

We continue our Chapterwise Biology Numericals Revision Series with
📘 Chapter 4 – Principles of Inheritance & Variation

This chapter contains some of the most important and frequently asked numericals in Class 12 Biology, especially from Mendelian crosses, probability, and genetic ratios.

Many students lose marks due to confusion in Punnett squares, phenotypic ratios, genotypic ratios, and probability-based questions.
This video explains everything in a step-by-step, structured, and exam-oriented way, helping you build strong confidence.

This video will help you:
✔ Solve Mendelian cross numericals confidently
✔ Understand genotype & phenotype ratios clearly
✔ Apply probability correctly in genetics problems
✔ Avoid common mistakes in Punnett square questions
✔ Score full marks in board exams

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📌 Numerical Areas Covered

• Monohybrid cross numericals
• Dihybrid cross calculations
• Test cross problems
• Incomplete dominance & codominance numericals
• Probability-based genetics questions
• Blood group–related numericals
• Board exam–oriented question patterns

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🎯 Why This Chapter Is Important

✔ Very high weightage in board exams
✔ Frequently asked numericals
✔ Scoring chapter if logic is clear
✔ Important for competitive exams as well

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🎓 About Swastik Education Science Stream

Swastik Education — trusted by many students — provides clear, concept-based and exam-focused learning for Class 11 & 12 Science.

We upload:
• Chapterwise one-shot revision
• Biology numericals practice series
• Sample paper & PYQ discussions
• Physics, Chemistry & Maths lectures
• After-12th career guidance

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