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Cistron

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Cistron

(Science: molecular biology) a genetic element defined by means of the cis trans complementation test for functional allelism, broadly equivalent to the sequence of dna that codes for one polypeptide Chain, including adjacent control regions. (genetics) a segment of dna that is involved in producing a polypeptide chain; it can include regions preceding and following the coding dna as well as introns between the exons; it is considered a unit of heredity; genes were formerly called factors.