Give examples to show evolution by anthropogenic action.
Class XII
Evolution
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Examples to show evolution due to anthropogenic action are as follows.
1. Industrial melanism: Before industrialisation, white coloured moth were more due to camoflague with the lichen covered white bark of tree. The dark coloured moth were vulnerable because they could not hide themselves from predators. After industrialisation, situation reversed because of deposition of soot on the bark of tree and death of lichen. Now dark coloured moth were able to hide them in dark background and white moths became vulnerable.
2. Overuse of DDT, to kill mosquitoes had ultimately resulted into evolution of resistant variety of mosquito towards DDT.
3. overuse of antibiotics have resulted into evolution of resistant variety of bacteria.
4. Overuse of weedicides and pesticides have resulted into evolution of resistant variety of weeds and pests respectively.
5. Moreover according to some scientists, diversification and evolution of Various types of finches from one common ancestor in Galapagos island found by Darwin may be result of anthropogenic action.
1. Industrial melanism: Before industrialisation, white coloured moth were more due to camoflague with the lichen covered white bark of tree. The dark coloured moth were vulnerable because they could not hide themselves from predators. After industrialisation, situation reversed because of deposition of soot on the bark of tree and death of lichen. Now dark coloured moth were able to hide them in dark background and white moths became vulnerable.
2. Overuse of DDT, to kill mosquitoes had ultimately resulted into evolution of resistant variety of mosquito towards DDT.
3. overuse of antibiotics have resulted into evolution of resistant variety of bacteria.
4. Overuse of weedicides and pesticides have resulted into evolution of resistant variety of weeds and pests respectively.
5. Moreover according to some scientists, diversification and evolution of Various types of finches from one common ancestor in Galapagos island found by Darwin may be result of anthropogenic action.
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These are some of the examples that show evolution by anthropogenic action. A good example is industrial melanism. The white moth was favoured because they were able to comflouge because of the white lichen this made it easier to hide in it. After industrialization there was deposition of dark deposits at the back of then trees this was a favour for the dark moth since they were able to hide there being a disadvantage to the white moth. CMM
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