1. Biology Dictionary
  2. Chromatid

Chromatid染色单体

释义:

Chromatids are single copies of chromosomes that are duplicated into two and joined by centromeres during cell mitosis.During meiosis, sister chromatids appear, sister chromatid exchange occurs.

染色单体是在细胞有丝分裂过程中,染色体复制为两条并由着丝点连接的单拷贝。减数分裂过程中会出现姐妹染色单体,发生姐妹染色单体交换。

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