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 save one's face

To evade disgrace
To oppose
To say plainly
To hide oneself

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Idiom
Mutation is

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

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