| 21. | Heterothallic fertilization occurs once two haploid mycelia ( homokaryons ) of different mating types have made contact.
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| 22. | Once conditions have improved the zygospore germinates and undergoes meiosis to produce haploid offspring of both mating types.
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| 23. | For infection to occur, two sporida from different mating types must come together and form a dikaryon.
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| 24. | "' Mating types "'are molecular mechanisms that regulate compatibility in sexually reproducing eukaryotes.
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| 25. | In order to have successful sexual reproduction, weather conditions must be favorable and mating types must match.
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| 26. | Once two opposite mating types have made initial contact, they give rise to a zygospore through multiple steps.
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| 27. | Clinical isolates of " H . duboisii " belong predominantly to the " " mating type.
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| 28. | Zygospore formation is the result of a multiple step process beginning with compatible mating type zygophores growing towards each other.
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| 29. | The vast majority of environmental and clinical isolates of " C . neoformans " are mating type alpha.
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| 30. | Interestingly, the European population is predominantly A1 while both mating types A1 and A2 are found in North America.
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