X-Linked Inheritance and Color Blindness — NEET Biology
🔥 Predicted for NEET 2027📖 NCERT Source
The mother is not herself colour blind because the gene is recessive. That means that its effect is suppressed by her matching dominant normal gene. A daughter will not normally be colour blind, unless her mother is a carrier and her father is colour blind.
Why This May Be Tested in NEET 2027
Adjacent to a frequently-asked paragraph in the same chapter.
Practice This Concept
QuestionPredicted for NEET 2027
A carrier female for colour blindness marries a normal male. What is the chance that their son will be colour blind? (NEET 2024)
📖 Solution & NCERT Explanation
View solution & NCERT explanation
Correct answer: C — 50%
Cross: XᴺXᶜ × XᴺY → 50% sons will be XᶜY = colour blind.
❓ Frequently Asked Questions
What does NCERT say about mother not herself colour?
The mother is not herself colour blind because the gene is recessive. That means that its effect is suppressed by her matching dominant normal gene.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Principles of Inheritance and Variation, Class 12 NCERT Biology.
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank
MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.
176 of 180 ReNEET 2026 questions traced to MedicNEET17,000+ Biology questionsHindi + English
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