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defined:
A noncoding sequence of DNA that is initially copied into RNA but is cut out of the final RNA transcript.
explained:
Listen to a detailed explanation. Dr. Jennifer Puck, formerly of the National Human Genome Research Institute's Genetics and Molecular Biology Branch, defines intron.
illustrated:
View illustration
relatedterms:
deoxyribonucleic acid (DNA), gene, ribonucleic acid (RNA), genetic code (ATGC), chromosome
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