Mutation
/mjuˈteɪʃən/
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Definition
(noun) Any alteration or change.
Sentence Examples
There are no reports on this mutation because such a mutant wouldn't even be born.
Without the random mutation of genes there would be no evolution.
CEFR Practice Quiz
A rare genetic ____ caused the flower to grow with white petals instead of its usual bright red color, making it a very interesting specimen.