Summary
CertainNeurospora mycelia, incapable of producing perithecia when grown alone, were shown to contain both (+) and (-) nuclei, but these nuclei were incapable of reacting with each other to produce perithecia due to the presence of sterility factors. The possibility that such sterile bisexual heterokaryons are common among fungi is discussed.
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References
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Lindegren, C.C. The genetics ofNeurospora . Journ. of Genetics 28, 425–435 (1934). https://doi.org/10.1007/BF02981764
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DOI: https://doi.org/10.1007/BF02981764