Cistron and Regulatory gene

Cistron noun - (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.

Regulatory gene and cistron are semantically related in gene that makes repressor topic. In some cases you can use "Regulatory gene" instead a noun "Cistron".

Regulatory gene noun - A gene that produces a repressor substance that inhibits an operator gene.

Cistron and regulatory gene are semantically related in gene that makes repressor topic. You can use "Cistron" instead a noun phrase "Regulatory gene".