In the Ascomycota this attribute is most often found in the ascogenous hyphae and ascocarp while the bulk of the mycelia remains monokaryotic.
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In the Basidiomycota this is the dominate phase with most Basidiomycota monokaryons weakly growing ans short-lived.
dikaryon |
Most fungi of Basidiomycota exist as a dikaryon in which threadlike cells are partially partitioned into segments each containing two differing nuclei.