<prompt> If the radiation exposure occurs before DNA synthesis, the damage manifests:One arm of chromosomeBoth the arms of chromosomeShorter arm of chromosomeNone of the arm of chromosome is affected  <response>: If radiation exposure occurs after DNA synthesis i.e., in G2 or mid and late S, only one arm of the affected chromosome is broken.If radiation induced break occurs before DNA has replicated i.e., in G1 or early S, the damage manifests in both arms Chromosome aberration at the next mitosis. 