Molds (or moulds; see spelling differences) include all species of microscopic fungi that grow in the form of multicellular
filaments, called hyphae. In contrast, microscopic fungi that grow as single cells are called yeasts. A connected network of
these tubular branching hyphae has multiple, genetically identical nuclei and is considered a single organism, referred to
as a colony or in more technical terms a mycelium.
Molds do not form a specific taxonomic or phylogenetic grouping, but can be found in the divisions Zygomycota,
Deuteromycota and Ascomycota. Although some molds cause disease or food spoilage, others are useful for their role in
biodegradation or in the production of various foods, beverages, antibiotics and enzymes.
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