并连染色体;
Translocation occurs when a fragment of one chromosome becomes attached to a non-homologous chromosome.
一段染色体跟 非 同源染色体连在一起时就发生易位.
The most condensed and constricted region of a chromosome to which the spindle fiber is attached during mitosis.
着丝点,着丝粒:一个染色体上最密集、压缩的区域,有丝分裂时梭形纤维附着于此。
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