Practice question

Basidiospores formation follows meiotic division within basidium after diploid nucleus formed via karyogamy. Meiosis I and II yield four haploid nuclei that migrate into sterigmata developing into basidiospores exogenously. Some species follow additional mitotic division to produce eight spores increasing output. Mitosis, binary fission and budding produce genetically identical clones without reduction, not characteristic here. Meiosis ensures genetic recombination, segregation of mating-type loci and reduction from transient diploid zygote to haploid dispersal propagules essential for Basidiomycota life cycle maintaining haploid-dominant dikaryotic mycelial phase after spore germination and dispersal.