A mating between niacin and pantothenate auxotrophs of Cryptococcus neoformans gave a few prototrophic progeny that were self-fertile. These were uninuclear but contained twice as much DNA as the parental strains. Segregation of nutritional markers was observed upon sporulation. We conclude that these self-fertile strains are diploids.
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White et al. (1985) studied this question.
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