Idiom
To wash one's dirty linen in public

To quarrel in the open
To discuss dirty and scandalous matters of personal nature in the presence of strangers
To do some ugly work in public
To criticise one's nature in public

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Idiom
Mutation is

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

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