(genetics) traits that tend to be inherited together as a consequence of an association between their genes; all of the genes of a given chromosome are linked (where one goes they all go). Synonym:gene linkage.
3.
A mechanical system of rods or springs or pivots that transmits power or motion.
... went on, as if he hadn't heard, "would account for the apparent—ah—mental linkage that makes a mob appear to act as a single organism during certain periods of—ah— stress." He looked judicious for a second, and then nodded. "However," he said, "other than that, I would doubt that there is any psionic ... — Supermind • Gordon Randall Garrett