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NEETZoologyEvolution

Read the following statements and choose the following option: 1. After industrialisation set in, it was observed that there were more white-winged moths on trees than dark-winged or melanised moths. 2. In 1920, there were more dark-winged moths in the same area, i.e., the proportion was reversed. 3. During post-industrialisation period, the tree trunks became dark due to industrial smoke and soots 4. Excess use of h

Options

  1. AOnly 2 is correct
  2. BOnly 1 and 4 are incorrect
  3. CAll are incorrect
  4. DBoth 1 and 2 are incorrect

Correct answer

B. Only 1 and 4 are incorrect

Step-by-step solution

Another interesting observation supporting evolution by natural selection comes from England. In a collection of moths made in 1850s, i.e., before industrialisation set in, it was observed that there were more white-winged moths on trees than dark-winged or melanised moths. However, in the collection carried out from the same area, but after industrialisation, i.e., in 1920, there were more dark-winged moths in the same area, i.e., the proportion was reversed.

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