meiotic division

基本解释

The results indicated that nutria oocytes, like other rodent oocytes, can be matured in vitro, complete first meiotic division and discharge first polar body.
结果表明海狸鼠卵母细胞与其它啮齿动物的卵母细胞一样，能够在体外培养成熟，完成第一次减数分裂，排出第一极体。
Conclusion: The twin girls originate from dizygotic and the extra chromosome 21 of the elder sister is from nondisjunction during the first meiotic division of the mother.
结论孪生姐妹为异卵孪生，孪生姐姐额外的2 1号染色体来自于母亲第1次减数分裂不分离。
The main meiotic chromosomal aberration of PMC are multipolar division, loose pairing, inversion, tetravalent, interlocking chromosome, unequal segregation, straggling chromosome, bridge and laggards.
上述不育系花粉母细胞减数分裂的染色体畸变是：多极分裂、疏松配对、倒位、四价体、互锁染色体、不等分离、拖曳、桥、落后等；

成熟分裂
In June, the spermatocyte was in the first meiotic division. In July, the testis entered spermiogenesis.
在6月的精巢中，初级精母细胞开始进行成熟分裂，形成次级精母细胞。
农业科学
减数分裂

减数分裂
The formation mechanism of aneuploid is an important focus in medical genetic research field. It is considered that aneuploid is often caused by chromosomal nondisjunction during cell division stage, chromatid predisjunction during meiotic division stage, and loss of chromosome.
染色体非整倍体的形成机制一直是医学遗传学研究领域的重要课题，目前认为多数是细胞分裂时期染色体不分离、减数分裂时期染色单体提早分离和染色体丢失引起。