有丝分裂的

There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells.

发现在其有丝分裂的晚前期、中期阶段，咯对源染色体都在进行联会。

Human Peripheral blood exposed with tritiated water at variousdoses for 54 hr was examined to observe the chromosome and chromatid abe-rrations at metaphases in the first mitosis of lymphocytes.

将人体外周血在量的氚水中养54小时,观察细胞第一次有丝分裂中期的染色体型及单体型畸变。