Summary
Müller (1963) suggested that the differences which were found in the dose effect curves of 4 somatic mutations, affecting scale form and colour, after 6 hrs pretreatment in low and high temperatures, might be due to the fact that the pupae were x-rayed at 2 different developmental stages, each of which exhibiting a different sensitivity pattern for the 4 mutant types. In order to test this suggestion, dose effect curves were established for pupae of the 2 age groups corre-sponding to the stages which were attained by the temperature treatments.
The exponent of the dose effect curves is the same for all mutant types and independent of the age at irradiation. The age groups differ in their mutational spectra: The older pupae show significantly more mutants of type ES 1 and less of type ES 2 than the younger group. Both groups have identical frequencies of ES 3, and the differences between the ES 4 — frequencies, which lie in the same direction as those of ES 2, are not significant. The results are discussed with regard to a possible difference in the specific radiosensitivity of epithelial cells and scalestem-cells I.
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Müller, I., Pentz, S. & Harte, C. Die Abhängigkeit des somatischen Mutantenspektrums vonEphestia kühniella vom Entwicklungsstadium der bestrahlten Tiere. Zeitschrift für Vererbungslehre 97, 353–360 (1966). https://doi.org/10.1007/BF00902278
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DOI: https://doi.org/10.1007/BF00902278