Mark the correct statement with respect to industrial melanism:

1. Lichens can be used as an industrial pollution indicator.
2. Low count of melanic moths are found in rural areas where industrialisation did not occur.
3. Neither grey nor the dark variety of moths has been completely wiped out.
4. All of these
Subtopic:  Additional Theories of Darwin |
 87%
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Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution -

1. production of 'Dolly', the sheep by cloning

2. Development of organs from 'stem' cells for organ transplantation

3. Development of transgenic animals

4. Prevalence of pesticide resistant insects

Subtopic:  Additional Theories of Darwin |
 82%
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The excess use of herbicides and pesticides etc. has resulted in selection of resistant varieties in a much lesser time. Hence, resistant organisms/cells are appearing in a time span of months or years and not centuries. This statement is:

1. In favour of evolution by anthropogenic action
2. Against the natural selection theory
3. In favour of sexual selection theory
4. In favour of genetic drift
Subtopic:  Additional Theories of Darwin |
 84%
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