Brandriff B, Pedersen R A
Science. 1981 Mar 27;211(4489):1431-3. doi: 10.1126/science.7466400.
Unscheduled DNA synthesis occurred in both male and female pronuclei of the mouse zygote in response to irradiation with ultraviolet light, indicating a capacity for excision repair. Furthermore, damage to DNA of the male gamete before fertilization can be repaired after the sperm enters the egg cytoplasm.