论文部分内容阅读
实验选用三个品系果蝇(即修复增强株yw和修复缺陷株(mei41D_5与mus302D~1)的成熟卵母细胞(A类)和未成熟卵母细胞(B类),观察其早期和晚期显性死亡.每一指标重复4～7次(大多数6次),修复缺陷株检测1500～2000个卵,修复增强株检测700～2500个卵.结果:(1)yw株正常胚胎死亡较低,其两类卵的早期死亡均高于晚期死亡.当A类卵细胞预先照射0.02Gy后不同时间再照射2Gy时,显性致死发生率明显降低,并持续至照射后24h,显性致死减少以晚期死亡减少更明显;B类卵细胞对显性致
The experiment selected three strains of fruit flies (that is, the repair of the enhanced strain yw and repair defects strains (mei41D_5 and mus302D ~ 1) of mature oocytes (A) and immature oocytes (B), observe the early and late significant Each index was repeated 4 to 7 times (most of 6 times), detected 1500-2000 eggs for repair defective strains and 700-2500 eggs for repair enhancement test.Results: (1) The normal embryo death of yw strain was lower , The early deaths of both types of eggs were higher than the late death.When the A class oocytes pre-irradiated with 0.02Gy 2h after irradiation at different times, the dominant lethal incidence was significantly reduced and continued until 24 hours after irradiation, the dominant lethal decrease Late death reduced more obvious; B class oocytes on the dominant