Abstract
HAAK, R. A., AND BOCKRATH, R. C. Pyrimidine Dimer Excision and Mutation Frequency Decline. Radiat. Res. 61, 164-171 (1975). The relationship between pyrimidine dimer excision and mutation frequency decline has been clarified by obtaining quantitative data on the rates of the two processes in a single bacterial strain. We have found (a) the loss of potential revertants to be significantly faster than the removal of thymine-containing dimers, and (b) the kinetics of dimer removal to be similar whether the postirradiation environment is conducive to mutation frequency decline or not.
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