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[mass noun] 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.
- ‘In wild-type hermaphrodites, germ cells at the dorsoventral flexure exit the pachytene stage of the first meiotic prophase and proceed to diakinesis.’
- ‘However, in the mouse, cytogenetic examination of chiasmata at diakinesis has been widely used to study genetic recombination.’
- ‘Loose condensation of chromosomes was observed in 12% of the cells from diakinesis to anaphase.’
- ‘Their nuclei contain univalents as well as bivalents at diakinesis and metaphase I.’
- ‘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.’
Early 20th century: from dia- ‘through, across’ + Greek kinēsis motion.
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