Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. To cast pearls before a swine

To waste money over trifles
To spend a lot of money on the unkeep of domestic hogs
To offer a person a thing which he cannot appreciate
To spend recklessly

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Idiom
Mutation is

a change which affects the parents
a factor responsible for plant growth
a change that is inherited
a change which affects the offspring of F2 generation only

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