Fig. 12
From: Evolutionary consequences of polyploidy in prokaryotes and the origin of mitosis and meiosis
In mitotic polyploids, promiscuous (random) chromosome exchange coupled with crossing over may be deleterious (6-ploid mitosis pairing004: R pair  = 0.04, homology = false), while the same process between similar chromosomes (6-ploid mitosis homologous-pairing004: R pair  = 0.04, homology = true) confers long term advantage. Moreover, ‘choosy’ chromosome exchange provides some advantage even without crossing over (6-ploid mitosis homologous-chr-exchange004: R ex  = 0.04, homology = true). Crossing over without chromosome exchange (6-ploid mitosis crossing04: R cross  = 0.4) is neutral. Other parameters as in Fig. 10a (6-ploid mitosis)