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单词 diakinesis
释义

diakinesis

/ˌdʌɪəkʌɪˈniːsɪs /
noun (plural diakineses /ˌdʌɪəkʌɪˈniːsiːz/) [mass noun] Biology
The fifth and last stage of the prophase of meiosis, following diplotene, when the separation of homologous chromosomes is complete and crossing over has occurred.For F59A1.7, affected worms exhibiting a high frequency of achiasmate chromosomes at diakinesis also had abnormally large nuclei at the pachytene stage, earlier in meiotic prophase....
  • In wild-type hermaphrodites, germ cells at the dorsoventral flexure exit the pachytene stage of the first meiotic prophase and proceed to diakinesis.
  • Loose condensation of chromosomes was observed in 12% of the cells from diakinesis to anaphase.

Origin

Early 20th century: from dia- 'through, across' + Greek kinēsis 'motion'.

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更新时间:2024/11/12 10:00:30