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本文报道雌鼠及雌雄性小鼠分别受到０．１５－１．５６Ｇｙ~６０Ｃｏγ－射线照射后，在不同时间进行同笼，取其胚胎观察形态、大小等并制备每个胚胎的染色体标本。分析胚胎细胞染色体数目异常、结构畸变及显性致死效应。结果表明，染色体数目异常发生率与剂量呈直线关系。单纯雌鼠受到１．０７Ｇｙ照射后观察到平衡易位携带者的再现率为０．９９％。雌雄鼠均受到１．０７及１．５６Ｇｙ照射后其Ｆ_１子代中平衡易位携带者的再现率皆为０．３２％。雌雄鼠均受照射组中的显性致死率明显高于雌鼠受照射组，且剂量效应关系为直线相关
In this paper, the female and male mice were irradiated with 0.15-1.56Gy ~ 60Coγ-rays respectively, then the same cage was taken at different times. The embryos were observed for morphology, size, etc. and the chromosome specimens of each embryo were prepared. Analysis of embryonic cell chromosome abnormalities, structural aberrations and dominant lethal effect. The results show that the number of chromosomal abnormalities and the dose was a linear relationship. The reproductive rate of balanced translocation carriers was observed to be 0.99% for simple female mice exposed to 1.07 Gy. Both male and female mice received 1.07 and 1.56Gy irradiation F1 offspring in the balance of the transplanted persons were all 0.32%. The dominant lethality of female and male mice in irradiated group was significantly higher than that in female irradiated group, and the dose-response relationship was linear