উত্পৰিবৰ্তন (Assamese) [ Roman: ut.po’’.ri.bor.ton]
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    Contributed by: Priyankoo (প্ৰিয়ংকু) on 2008-01-27
    1. (Abstract Noun) a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome