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: Since crossing over can occur during the first meiotic division, it does allow for some genetic variation in the offspring.
中文: 在第一次减数分裂的过程中可以发生交换现象，因而在后代中有遗传变化。
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英文: The second meiotic division thus gives rise to two cells with the diploid number of chromosomes, one of which divides parthogenetically to form an cmbryo.
中文: 在第二次减数分裂中上升为两个细胞包含双倍体的染色体数目，其中的一个分裂形成胚胎。
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英文: Mean meiotic chromosome association and chiasma frequency of the three hybrids were 7. II+0. II+0.0III,0.;
中文: 杂种减数分裂中期 PMC染色体平均配对频率和交叉结频率分别为7. Ⅰ+0. Ⅱ+0.0Ⅲ,0.;
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英文: Mean meiotic configuration of normal PMC's at MI was .7Ⅰ + 0.Ⅱ + 0.0Ⅲ. Laggard chromosomes were ob-served in anaphase Ⅰ and anaphase Ⅱ Polyad had micronuclei.
中文: F_花粉母细胞预期类型(n=8)的减数分裂中期Ⅰ平均染色体配对构型为.7Ⅰ+0.Ⅱ+0.0Ⅲ,后期Ⅰ和后期Ⅱ有落后染色体,多分体具大量微核。
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