Regulator gene and Structural gene

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

Structural gene and regulator gene are semantically related. in gene that makes repressor topic. In some cases you can use "Structural gene" instead a noun phrase "Regulator gene".

Structural gene noun - A gene that controls the production of a specific protein or peptide.

Regulator gene and structural gene are semantically related. Sometimes you can replace phrase "Regulator gene" with "Structural gene", this phrases are similar.