Noun
dissociator (plural dissociators)
(chemistry) A reaction vessel in which a dissociation reaction takes place.
She found that the Dissociator did not just dissociate or cause the chromosome to break, it also had a variety of effects on neighboring genes when the Activator was also present, which included making certain stable mutations unstable. Source: Internet
She identified two new dominant and interacting genetic loci that she named Dissociator (Ds) and Activator (Ac). Source: Internet
She referred to Dissociator and Activator as "controlling units"—later, as "controlling elements"—to distinguish them from genes. Source: Internet