No, the NOTCH pathway does not exist in yeast. It is only found in organisms of the kingdom Animalia (i.e., not in plants or multi-cellular fungi). It appears to be an ancient signaling pathway. Orthologs of the NOTCH signaling receptors and ligands have been found in C. elegans and even non-bilaterian animals like Hydra vulgaris.
The notch signaling pathway does not exist in yeast. The Notch pathway is an evolutionarily conserved, intercellular signaling system which is present in all multicellular organisms and mammals. The Notch pathway plays an important role in embryonic development as it controls cell proliferation and cell differentiation.
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Notch signalling is an evolutionarily conserved pathway present in some organisms, such as drosophilas and humans, however some studies indicate that this signalling pathway may be involved with the infectious process of some pathogenic fungi, as well as modulation of the immune response against these fungi.