Gene
/dʒˈin/
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Definition
(noun) A theoretical unit of heredity of living organisms which may take several values and (in principle) predetermines a precise trait of an organism's form (phenotype), such as hair color.
Sentence Examples
DNA is a complex chemical that makes up a gene.
A great many people were opposed to gene therapy in terms of ethics.
CEFR Practice Quiz
Scientists have identified a specific ____ that may be responsible for increasing the risk of developing certain diseases.