They're not chromosomal differences because this is the ordinary process of mitosis.
它们的染色体没有任何变化,因为这是正常的有丝分裂过程
Several things happen during mitosis, first, when a cell enters the process of mitosis it already has twice the DNA that it needs.
有丝分裂中有几个重要的步骤,首先,当细胞进入有丝分裂过程,细胞中已含有两倍于其正常所需的DNA
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