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The mating orgy of the hmα−-2 mutant. The HO, HMa, and hmα−-2 mutant switches continuously between MATα and mutant mata− (left). Reproduced from Klar and Fogel (1979). The mata− cells mate as a-mating type. Photograph of promiscuous matings between switched cells show dumbbell-shaped zygotic cells (marked by arrows, right).
