The most condensed and constricted region of a chromosome to which the spindle fiber is attached during mitosis.

 
  • 著(zhù)絲點(diǎn),著(zhù)絲粒一個(gè)染色體上最密集、壓縮的區域,有絲分裂時(shí)梭形纖維附著(zhù)于此
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