Question

How do the observations made during moth collection in pre and post industrialized area in England support evolution by natural selection?

Answer 1

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An interesting observation supporting evolution by natural selection comes from England. Pre-industrialisation: In 1850, in a collection of moths it was observed that, there were more white winges moths on trees than dark winged or melanised moths. So, nature selected only those moths which were better suited.

Answer 2

Answer:

1. Before industrialisation while coloured lichens covered the trees in which white winged moths camouflaged themselves from redators.
2. More white winged moths existed on trees than dark winged moths
3. After industrialisation there was more dark winged moths in the same area.
4. These moths could not be easily spotted by the predators against trunks which became dark due to industrial smoke and spot.
5. Hence dark winged moths survived by natural selection.