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. Don't stick your neck out.

interfere
invite trouble unnecessarily
look outside
move

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Idiom
Mutation is

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

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