Abstract
THE inactivation of Saccharomyces strains of different ploidy induced by radiation has been investigated in detail by various authors1. For X-rays, ‘recessive’- and ‘dominant’-acting damages have been separated2. ‘Dominant’ lethal damage renders a zygote formed by fusion of an irradiated and an unirradiated cell unable to develop into a visible colony. Stein and Laskowski3 took this type of damage into consideration when building a mathematical model to interpret the inactivation of Saccharomyces. Part of their theory was that ultraviolet light of wave-length 254 nm also causes this type of dominant damage. This communication presents results which show that this damage can indeed be observed after ultra-violet irradiation.
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References
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Mueller, R., Mikroskopie, 11, 36 (1956).
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HAEFNER, K., KIRSCHFELD, H. Copulation of Ultra-violet-irradiated and Unirradiated Saccharomyces Cells of Different Ploidy. Nature 211, 310–311 (1966). https://doi.org/10.1038/211310b0
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DOI: https://doi.org/10.1038/211310b0
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