What is the peculiarity of yeast propagation?

Yeast – budding fungi (asexual reproduction – by budding), belong to the class of ascomycetes, which are characterized by sexual reproduction by ascospores (for example, the genus Saccharomyces) or deuteromycetes (yeasts that do not have the ability to reproduce sexually, for example, Torulopsis).
Cell shape – spherical, ovoid, cylindrical, lemon-shaped, etc.
The classification is based on the ability to form asci, false mycelium and budding. For example, the yeast of the genus Endomycopsis is capable of forming all three elements, Saccharomyces – for the formation of asci and budding, Candida – for the formation of false mycelium and budding, Torulopsis – only for budding.
Sexual reproduction of yeast proceeds as follows: a diploid cell undergoes meiosis, resulting in the formation of 4 haploid cells of two types – A and α; they can divide to form the same haploid cells. When two types of cells merge, a zygote is formed, which turns into a normal diploid cell; when similar cells merge, an abnormal cell is obtained that is not capable of meiosis.
Yeast is widespread in nature (in the soil, on the surface of plants, especially fruits).