

InterviewSolution
1. |
How can evolution by natural selection be explained by melanised moths before and after industrialisation in England? |
Answer» Before industrialization there were mostly light moths (peppered moth) as they merged with the background of trees, having lichen on their bark & fewer black moths due to predation by birds as they were clearly visible against the grey background. After Industrialisation-deposition of soot due to emission from factories made the tree barks black and the black moths got cammouflaged in the background & survived but as the grey moths were now visible, they were easily spotted out & predated upon by the birds and their number got reduced, thus black moths naturally selected over the grey ones because they got best adjusted to their environmental condition. |
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