NEET Biology
NEETBiologyEvolutionClass 12

What does “Hardy–Weinberg principle” actually mean in Evolution, and why does it matter for NEET?

allele frequencies in a large, undisturbed population stay constant — no evolution.

In simple words: allele frequencies in a large, undisturbed population stay constant — no evolution. Getting Hardy–Weinberg principle clear matters because NEET questions on Evolution usually test this idea directly, not just a formula you memorised.

Key point

Hardy–Weinberg principle

Common mistake

thinking allele frequencies always drift over time.

Memory tip

deviations from Hardy–Weinberg equilibrium signal that evolution is happening.

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