染色单体
关键词: 染色单体来源: 互联网
由超螺线体折叠和螺旋化形成的染色质的四级结构,长度约为 2~ 10微米,它是超螺线体压缩约 5倍的结果。细胞分裂中期的染色体是由两个染色单体组成的,两个染色单体在对应的空间位置上以着丝粒结合在一起。
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