Home
Class 12
BIOLOGY
Replacement of the lighter-coloured vari...

Replacement of the lighter-coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonaria) in England is the example of

A

natural selection

B

regeneration

C

genetic isolation

D

temporal isolation.

Text Solution

Verified by Experts

The correct Answer is:
A

In England before industrialisation in 1860, it was observed that there were more white-winged moths on tree trunks than dark winged or melanised moths. But after industrilisation in 1920, there were more dark-winged moths in the same area, Before industrialisation, the tree trunks were covered nu white-winged moths survived but the dark winged moths were eaten by predators. During post industrialisation period. the tree trunnks became dark due to industrial smoke and soot. Therefore, the white winged moths could not survive due to predators but dark winged moths survived. i.e., the moths that were hidden in background survived. Thus. industrial melansim supports evolution by natural selection.
Promotional Banner

Similar Questions

Explore conceptually related problems

Industrial Melanism in Pepper Moth Biston betularia is a classic example of

In the case of peppered month (Biston betuaria)the black - colouredform became dominant over the light - coloured form in England during industrial revolution. This is an example of

The population of grey coloured Biston betularia, were almost replaced by the black variety during the industrial revolution in England. Explain the mechanism involved.