alleryIndustrial melanism in **Biston betularia (peppered moth)** is a classic example of:
AGenetic drift
BLamarckian inheritance
CNatural selection (directional)
DBottleneck effect
Answer & Solution
Correct answer: C. Natural selection (directional)
**Before industrialisation:** pale, lichen-camouflaged moths predominated.
After soot blackened tree trunks, dark (carbonaria) form became favoured by selection (camouflaged from predatory birds).
A directional natural-selection example.
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