Hardest Genetics Questions for NEET – Practice with Detailed Solutions

Anand Tutorials
2 days ago
1 min read

Preparing for NEET Biology? Genetics is one of the most scoring yet tricky topics in the exam. Many students lose marks due to conceptual mistakes.

In this blog, we bring you challenging Genetics questions based on NEET PYQs to help you test your understanding.

🔥 Question 1: Dihybrid Test Cross

A heterozygous plant (YyRr) is crossed with a homozygous recessive plant (yyrr).What will be the phenotypic ratio?

A) 9:3:3:1

B) 1:1:1:1

C) 3:1

D) 2:1:1

👉 Correct Answer: B) 1:1:1:1

📌 Concept Trick:

Any dihybrid test cross = 1:1:1:1

(Direct formula — no need to solve)

🔥 Question 2: Pedigree Analysis

A trait skips generations and appears in both males and females. What is it?

👉 Answer: Autosomal Recessive

📌 NEET Trick:

Skips generation → recessive
Both sexes → autosomal

🔥 Question 3: Meselson–Stahl Experiment

After F₁ generation, DNA is:

👉 Answer: Hybrid (¹⁵N–¹⁴N)

📌 Shortcut:

F₁ → ONLY hybrid
F₂ → hybrid + light

🔥 Question 4: Chargaff Rule

If A ≠ T → DNA is?

👉 Answer: Single-stranded

📌 Concept:

Chargaff rule only works for double-stranded DNA

🔥 Question 5: Test Cross Concept

👉 Answer: Each test cross is a back cross

📌 Remember:

Test cross = special type of back cross

🎯 Why Practicing Such Questions is Important

Genetics questions in NEET:

Are concept-based
Often twisted
Require quick logic

Practicing high-level questions helps you:

✔ Improve accuracy

✔ Save time

✔ Avoid silly mistakes

📚 Want Expert Guidance?

If you are struggling with Genetics or NEET preparation, personalized guidance can make a big difference.

👉 Anand Tutorials offers:

1:1 personalized classes
NEET Biology expert tutors
Concept-based learning

📞 Contact: 7974221232

🌐 www.anandtutorials.co.in