Class 12 · Principles of Inheritance and Variation

X-Linked Inheritance and Color Blindness — NEET Biology

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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.

NCERT Biology · Class 12 · Chapter 4 · Paragraph 84
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Adjacent to a frequently-asked paragraph in the same chapter.

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A carrier female for colour blindness marries a normal male. What is the chance that their son will be colour blind? (NEET 2024)

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