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