defined:

A sequence of DNA that is very similar to a normal gene but that has been altered slightly so it is not expressed. Such genes were probably once functional but over time acquired one or more mutations that rendered them incapable of producing a protein product.

explained:

Listen to a detailed explanation.

Dr. Richard Morgan, of the National Human Genome Research Institute's Clinical Gene Therapy Branch, defines pseudogene.

related
terms:

deoxyribonucleic acid (DNA), gene, protein

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