| 1. | The standard practice is to call the entire structure a chromosome and each of its strands a sister chromatid .
标准的做法是把整个结构称为一个染色体，而把它的各条称为姐妹染色单体。 |
| 2. | Non - sister chromatid
非姐妹染色单体 |
| 3. | During mitosis , sister chromatids remain joined by their centromere until anaphase
在有丝分裂期间，姐妹染色单体在分裂后期之前都是通过着丝点连接的。 |
| 4. | During anaphase ii the centromeres divide and single chromatids are drawn toward the poles , thus sister chromatids are separated
在减数分裂后期ii ，每条染色体的两个染色单体随着着丝点的分裂而彼此分开，由纺锤丝牵向两极。 |
| 5. | During diakinesis the sister chromatids of homologous pairs of chromosomes complete their separation , and the chromosomes coil tightly , shortening and thickening
在终变期配对的同源染色体中的姐妹染色单体完成分离，染色体变成紧密凝集的状态，缩至最小长度。 |
| 6. | We have reported that squalene , a natural fish oil , is a potential preventive agent against sodium arsenite - induced sister chromatid exchanges and micronuclei in chinese hamster ovary - k1 cells
以达成熟地步，因此使得探讨环境毒物暴露引发的差异性基因表达成为可以进行的研究。我们已开始以 |
| 7. | Several studies have shown that so2 and its derivatives could induce chromosomal aberrations , sister chromatid exchanges and micronuclei in human blood lymphocyte , bone marrow cell in mice and chl
研究发现， so _ 2及其衍生物可引起人外周血淋巴细胞、小鼠骨髓细胞、中国仓鼠肺成纤维细胞等哺乳动物细胞的染色体畸变、姊妹染色单体交换及微核的形成。 |
