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Chemotropism in Yeast
Yeast release chemical pheromones in order to attract mates. They release two different factors, a- and α-factor. By secreting these factors a chemical gradient is formed that attracts other yeast during mating. In order for the yeast to sense the gradient that have to have proper receptors that binds a- or α-factor. There are three important receptors that yeast have to detect the pheromones: seven transmembrane G-protein coupled receptor (GPCR), an a-factor specific receptor, and a α-factor receptor .inogen susceptibility.