abnormal regulation of mitotic DNA replication initiation replication origin firing during mitotic G2 phase A regulation phenotype observed in the vegetative growth phase of the life cycle in which DNA replication is initiated at one or more origins during G2 phase of the mitotic cell cycle. replication origin firing during G2 phase of mitotic cell cycle replication origin firing during mitotic G2 phase during vegetative growth midori 2015-04-29T17:01:38Z FYPO:0004597