THE SEPARATION AND ISOLATION OF PARTICULAR BIOCHEMICAL MUTANTS OF NEUROSPORA BY DIFFERENTIAL GERMINATION OF CONIDIA, FOLLOWED BY FILTRATION AND SELECTIVE PLATING

Abstract

1.The time interval between breakage and reunion is dose dependent and is decreased if BAL is present during irradiation.2. Breaks produced in the presence of BAL interact normally with those pro- duced in its absence.3. Rejoining of breaks produced in the presence of BAL is delayed by previous irradiation in its absence.4. BAL decreases the aberration yield and the reunion delay by different amounts.5. The reunion delay time per se has little or no influence on the aberration frequency.Taken together, the findings indicate that chromosome breakage and the radia- tion-induced delay of reunion are different and independent effects of the radiation.