sentences:  "Kluyveromyces" species are affiliated with the first of this clades while species of "Saccharomyces" belong to the latter.Separation of these clades based on the presence of the WGD event explains why, even though the two species are closely related, fundamental differences exist between them.Colonies of "K. marxianus" are cream to brown in colour with the occasional pink pigmentation due to production of the iron chelate pigment, pulcherrimin.