Principles of Inheritance Part 3 | Dihybrid Cross, LOIA, Polygenic Inheritance | NEET Bio Genetics

Описание: Welcome to Principles of Inheritance & Variation – Part 3 (1-Hour Deep Dive Series)!
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In this lecture, we explore some of the MOST important Genetics concepts tested in NEET Biology, including:

👉 Incomplete Dominance (Pea seed size – NCERT)
👉 Dihybrid Cross
👉 Gregor Mendel’s Law of Independent Assortment (LOIA)
👉 Polygenic Inheritance (multi-gene traits)

This session gives complete conceptual mastery with NCERT logic, Punnett squares, ratios, graphs and NEET-style reasoning.

🧬 What You Will Learn in This 1-Hour Class:
🔹 Incomplete Dominance (Pea Seed Size – NCERT Special Case)

• What makes pea seed size a non-classical trait
• Phenotypic ratio logic
• Why it's incomplete dominance
• NEET-level MCQ traps

🔹 Dihybrid Cross (NCERT Standard)

• TTYY × ttyy
• F1 hybrid formation
• F2 phenotype ratio = 9:3:3:1
• Gamete formation logic
• Punnett square (4 × 4) explained slowly
• Why dihybrid cross proves LOIA
🔹 Law of Independent Assortment

• What “assort independently” actually means
• When LOIA works, when it fails
• Chromosomal basis of assortment
• NEET conceptual traps
• Testcross 1:1:1:1 logic

🔹 Polygenic Inheritance (High NEET Weightage)

• Multiple genes controlling single trait
• Skin colour example
• Continuous variation
• Bell-shaped curve logic
• Why polygenic ≠ multiple allelism
• Why polygenic ≠ pleiotropy
• MCQ patterns NEET loves

🔥 Additional Value:

• NCERT line-by-line clarity
• Easy memory tricks
• Most expected NEET questions
• Concept maps
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