n.〈生〉著絲點(diǎn)；著絲粒

The duplicates are attached to each other at a constricted region called the centromere. 對(duì)偶體彼此相連于稱(chēng)為著絲粒的縮小的區(qū)域。

The centromere contains the kinetochore, a structure involved in the attachment of the chromosomes to the spindle during nuclear division. 著絲點(diǎn)上包含了著絲粒，著絲粒確保細(xì)胞在分裂中染色體與紡錘體的整合，發(fā)生有序的染色體分離。