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An organism that possesses different alleles in a gene is heterozygous. It is an organism that carries different forms of a gene, where those forms produce slightly different results (i.e., brown hair or black hair, blue eyes or green eyes). In each case, the same gene has slight variations, so they are different “hetero” forms of the same thing.


About The Author

Matt Slick is the President and Founder of the Christian Apologetics and Research Ministry.