In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the…

In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of -
  1. Inheritance of darker colour character acquired due to the darker environment
  2. Natural selection whereby the darker forms were selected.
  3. Appearance of the darker coloured individuals due to very poor sunlight
  4. Protective mimicry

Solution

The case of the peppered moth (Biston betularia) is a classic example of natural selection. During the Industrial Revolution in England, pollution caused the trees to darken due to soot. The darker-colored (melanic) moths, which were previously rare, became more common because they were better camouflaged against the polluted trees, making them less visible to predators. The lighter-colored moths, on the other hand, became more visible and were thus more likely to be eaten. Over time, natural selection favored the darker forms in polluted areas.

Asked in: NEET 2009 (Mains)

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