cen·tro·mere /ˈsɛntrəˌmɪr/
  著絲點
  cen·tro·mere /ˈsɛntrəˌmɪ(ə)r/ 名詞
  著絲粒,動原粒
  centromere
       n : a specialized condensed region of each chromosome that
           appears during mitosis where the chromatids are held
           together to form an X shape; "the centromere is difficult
           to sequence" [syn: kinetochore]