Fungal Classification: Reproductive Structure as the Criterion
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State
Fungal phyla are classified by reproductive structure, much like prokaryote species delimitation by rRNA-gene similarity, rather than a species count.
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Ascomycota produces spores in a sac called an ascus; Basidiomycota instead produces spores on a club-shaped basidium.
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Sequencing continues to revise which species belong to which fungal phylum — this course teaches the criterion, not a frozen placement.