Operon

• operator gene

  A gene that activates the production of messenger RNA by adjacent structural gene...

• regulatory gene

  A gene that produces a repressor substance that inhibits an operator gene.

Also contains

• allele

  (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the...

• suppressor

  A gene that suppresses the phenotypic expression of another gene (especially of a mutant...

• homeotic gene

  One the genes that are involved in embryologic development.

• mutant gene

  A gene that has changed so that the normal transmission and expression of a trait is...

• oncogene

  A gene that disposes normal cells to change into cancerous tumor cells.

• polygene

  A gene that by itself has little effect on the phenotype but which can act together with...

• proto-oncogene

  A normal gene that has the potential to become an oncogene.

• recessive gene

  Gene that produces its characteristic phenotype only when its allele is identical;...

• repressor gene

  Gene that prevents a nonallele from being transcribed.

• structural gene

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

• transgene

  An exogenous gene introduced into the genome of another organism.

• X-linked gene

  A gene located on an X chromosome.

• Y-linked gene

  A gene located on a Y chromosome.

• dominant gene

  Gene that produces the same phenotype in the organism whether or not its allele identical;...

• genetic marker

  A specific gene that produces a recognizable trait and can be used in family or population...

• lethal gene

  Any gene that has an effect that causes the death of the organism at any stage of l...

• linkage group

  Any pair of genes that tend to be transmitted together; "the genes of Drosophila fall...

• modifier

  A gene that modifies the effect produced by another gene.

• nonallele

  Genes that are not competitors at the same locus.