The condition described is known as dikaryotisation or the dikaryophase, where a cell contains two haploid nuclei (n+n) of different mating types (different genomes) that do not fuse immediately. In Basidiomycetes, this dikaryotic phase is dominant and long-lived. To ensure that each new cell formed during growth receives one nucleus of each type, these fungi utilize specialized structures called clamp connections, which allow the nuclei to divide independently and simultaneously while maintaining the binucleate state.

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