Fig. 9
From: Evolutionary consequences of polyploidy in prokaryotes and the origin of mitosis and meiosis
Chromosome exchange is useless by itself, but confers strong advantage when combined with crossing over. a 2-ploids (2-ploid: R ex  = 0, R cross  = 0; 2-ploid-chr-exchange05: R ex  = 0.5, R cross  = 0; 2-ploid-crossing1: R ex  = 0, R cross  = 1; 2-ploid-chr-exchange05-crossing1: R ex  = 0.5, R cross  = 1). b 6-ploids. c 18-ploids. Other parameters as in Fig. 1