以下为句子列表：
英文: In dandelion (Taraxacum), for example, the chromosomes of the megaspore mother cell remain in one cell after the first meiotic division, forming a restitution nucleus.
中文: 例如在蒲公英中，在第一次减数分裂后，大孢子母细胞的染色体仍在一个细胞中，形成一个再组核。
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英文: Spore mother cell A cell that gives rise to four haploid spores by meiosis.
中文: 孢子母细胞：可以发生减数分裂产生四个单倍体孢子的细胞。
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英文: These abnormal mitochondria and vacuoles may be associated with the death of microspore mother cell which leads to the male sterility in cotton.
中文: 线粒体和液泡结构异常可能是小孢子母细胞死亡造成雄性不育的细胞形态学特征。
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英文: When microspore mother cell (MMC) preparing meiosis, calcium precipitates appeared in the cytoplasm of tapetal cells and callus wall surrounding MMC.
中文: 当花粉母细胞进行减数分裂时，花药中的钙颗粒进一步增加，尤其是在小孢子母细胞的胼胝质壁中。
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