本文用人体外周血淋巴细胞微核和姐妹染色体互换试验研究酸角的抗突变作用。
Antimutagenici effects of tamarind were studied with micronucleus and sister-chromatid exchange tests in human peripheral blood lymphocytes.
着丝点是染色体的主缢痕，在这个地方姐妹染色单体连在一起。
Centromere is the primary constriction on the chromosome, a region at which the sister chromatids are held together.
染色体的主缢痕，使姐妹染色单体连在一起，在其两侧各有一个由蛋白构成的动粒。
Centromere --- The primary constriction on the chromosome, a region at which the sister chromatids are held together and at which the kinetochore is formed.
目的与方法：单细胞凝胶电泳技术(SCGE)、姐妹染色单体交换法(SCE)和染色体畸变分析法均能被用来检测dna的损伤或修复。
Purpose and methods: Single cell gel electrophoresis (SCGE), sister chromatid exchanges (SCE), chromosome aberrations are three methods to determine DNA damage and repair.
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。
During diakinesis the sister chromatids of homologous pairs of chromosomes complete their separation and the chromosomes coil tightly shortening and thickening.
结果64%的卵细胞核型正常，36%的卵细胞为非整倍体，其中22%为同源染色体不分离，14%为姐妹染色单体非平衡性过早分离。
Results 64% of oocytes were normal, 36% of oocytes were aneuploidy, of which 22% were due to nondisjunction and 14% unbalanced predivision.
结果64%的卵细胞核型正常，36%的卵细胞为非整倍体，其中22%为同源染色体不分离，14%为姐妹染色单体非平衡性过早分离。
Results 64% of oocytes were normal, 36% of oocytes were aneuploidy, of which 22% were due to nondisjunction and 14% unbalanced predivision.
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