obsolete regulation of mitotic anaphase true This term was made obsolete as part of the cell cycle overhaul. This is because it was decided that cell cycle phases are intervals and so cannot be regulated, rather it is the transitions between the phases that are regulated. GO:0090007 2009-07-17T01:08:58Z regulation of mitotic anaphase tb OBSOLETE. Any process that modulates the frequency, rate or extent of mitotic anaphase, a cell cycle process comprising the steps by which a cell progresses through anaphase, the stage of mitosis during which the two sets of chromosomes separate and move away from each other. biological_process