first meiotic division

基本解釋

The results indicated that nutria oocytes, like other rodent oocytes, can be matured in vitro, complete first meiotic division and discharge first polar body.
結(jié)果表明海貍鼠卵母細胞與其它嚙齒動物的卵母細胞一樣，能夠在體外培養(yǎng)成熟，完成第一次減數(shù)分裂，排出第一極體。
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.
結(jié)論孿生姐妹為異卵孿生，孿生姐姐額外的2 1號染色體來自于母親第1次減數(shù)分裂不分離。