Mouse oocyte dominant-lethal response to chronic gamma irradiation.

Adult mouse females were given 500 rad of chronic gamma rays at 0.01 rad/min and mated to unirradiated males during seven successive weeks to score the frequency of dominant-lethal mutations. Total dominant lethality was increased for any of the weeks post-radiation. Post-implantation dominant lethal yields were low, ranging from 2.5 to 6.1% for individual weeks p.r.