Mating in fungi is a complex process governed by mating types. Research on fungal mating has focused on several model species with different behaviour. Not all fungi reproduce sexually and many that do are isogamous; thus, for many members of the fungal kingdom, the terms "male" and "female" do not apply. Homothallic species are able to mate with themselves, while in heterothallic species only isolates of opposite mating types can mate. * Fungi within Zygomycota form progametangia with suspensors during mating * Fungi within Ascomycota form ascogonium and antheridium with trichogyne bridge *