... nodulation - 结瘤（作用）[用于植物学] constriction - 缢缩（作用）[用于真菌学]；缢痕 deactivation - 去活化（作用），失活（作用）， ...
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着丝点是染色体的主缢痕，在这个地方姐妹染色单体连在一起。
Centromere is the primary constriction on the chromosome, a region at which the sister chromatids are held together.
染色体短臂近着丝粒区观察到次缢痕。
The secondary constriction has been observed on the centromere region of the chromosome No.
但是染色体形态，如臂比值和次缢痕的位置和数目存在一定差异。
They differ from each other both in chromosome shapes and the positions of secondary constrictions.
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