(a) The four varieties which have been produced from ‘wild cabbage’ by the process of artificial selection are as follows:
(b) The example of an evolutionary change which was produced in an organism for one purpose which later on becomes more useful for a different function is as follows:
The feathers in the birds were first for providing the insulation to the bodies of birds . So, that they can protect themselves during winter but these feathers lead an evolutionary change and it is now used for flight by the birds.
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