NEET Biology
NEETBiologyPrinciples of Inheritance & VariationClass 12

What does “Sex-linked inheritance” actually mean in Principles of Inheritance & Variation, and why does it matter for NEET?

genes on the X chromosome (like those for haemophilia and colour blindness) affect males more often.

In simple words: genes on the X chromosome (like those for haemophilia and colour blindness) affect males more often. Getting Sex-linked inheritance clear matters because NEET questions on Principles of Inheritance & Variation usually test this idea directly, not just a formula you memorised.

Key point

Sex-linked inheritance

Common mistake

thinking sex-linked traits affect both sexes equally.

Memory tip

males have one X, so a single recessive X allele shows up in them.

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