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. 2020 Mar 17;45:163–176. doi: 10.3767/persoonia.2020.45.06

Fig. 3.

Fig. 3

Evolution models of mating type in Calonectria spp.: Heterothallic origin hypothesis. a–d. Four scenarios under which the mating type loci of heterothallic ancestors undergo an independent recombination event (unequal crossing over), resulting in the present homothallic mating type locus.