Dikaryosis: Genetic Determination in Schizophyllum

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Abstract
A dominant gene, dik + , has been identified as responsible for the establishment of the dikaryon in the basidiomycetous fungus Schizophyllum commune . Interaction between compatible homokaryons, both of which carry the recessive allele dik , leads to the formation of a diploid mycelium that closely resembles the homokaryon in morphology.