In 3-4 complete sentences, discuss yeast phylogeny. Yeasts are formed by various species of Basidiomycota and Ascomycota. Many yeasts have molds as sister taxa. In 3-4 complete sentences, discuss yeast phylogeny. Yeasts are formed by various species of Basidiomycota and Ascomycota. Many yeasts have molds as sister taxa. - Is the yeast (unicellular) morphology homologous or homoplasious for Asco+ Basidiomycota? Explain. - Are yeasts monophyletic, paraphyletic, or polyphyletic? Explain..