diakinesis


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di·a·ki·ne·sis

 (dī′ə-kə-nē′sĭs, -kī-)
n. pl. di·a·ki·ne·ses (-sēz)
The final stage of the prophase in meiosis, characterized by shortening and thickening of the paired chromosomes, formation of the spindle fibers, disappearance of the nucleolus, and degeneration of the nuclear membrane.
di′a·ki·net′ic (-nĕt′ĭk) adj.

diakinesis

(ˌdaɪəkɪˈniːsɪs; -kaɪ-)
n
(Zoology) the final stage of the prophase of meiosis, during which homologous chromosomes start to separate after crossing over
[C20: from dia- + Greek kinēsis movement]

diakinesis

the final stage of prophase prior to the dissolution of the nuclear membrane. — diakinetic, adj.
See also: Biology
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diakinesis - the final stage of the prophase of meiosis
prophase - the first stage of meiosis
phase, stage - any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
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References in periodicals archive ?
1964), and 100 well-spread diakinesis metaphase I cells were analyzed per animal to assess aberrations in five mice/group.
Modulatory effect of green tea against genotoxicity induced by hydrocortisonein mice/Efeito modulador do cha verde contra genotoxicidade induzida por Hydrocortisonein ratos
Table 2--Meiotic chromosome configurations at diakinesis and metaphase I and mode of reproduction of Paspalum.
Cytological and reproductive aspects in the Caespitosa group of Paspalum/Aspectos citologicos e reprodutivos no grupo Caespitosa do genero Paspalum
At the stage of diakinesis (end of prophase I), when fully cellularized oocytes are positioned in a single continuous row in wild-type worms, we also detected unevenly spaced nuclei, suggesting a defect in cytokinesis (white arrows).
A. C. elegans screening platform for the rapid assessment of chemical disruption of germline function
In all samples the karyotypes were obtained by counting the chromosomes of at least seven of the better metaphases (and diakinesis in males) for individual, by arranging and qualifying the chromosomes according to Levan et al.
Cariotipos de Akodon orophilus Osgood 1913 y Thomasomys sp
A complete pairing of chromosomes, forming 21 bivalents, up to late diakinesis was observed in both lines (Fig.
Telomeric heterochromatin, seeds and meiotic characteristics in two tricepiro lines/Heterocromatina telomerica, semillas y caracteristicas meioticas en dos lineas de tricepiro
In meiotic cells, from leptotene to diakinesis stages, the X chromosome shows positive heteropycnosis, and is usually located outside the autosomal chromatin mass (Fig.
Karyotype and male pre-reductional meiosis of the sharpshooter Tapajosa rubromarginata (Hemiptera: Cicadellidae)
In a comprehensive study of 33 species of the Eumastacid subfamilies Thericleinae and Euschmidtiinae from Africa (White 1965a), a number of meiotic peculiarities unique to Thericleinae were disclosed for the first time: in the majority of species, classic diplotene and diakinesis are omitted in male meiosis, and chiasmata only appear at early or midmetaphase I; the latter species are 'cryptochiasmate'.
110 years of orthopteran cytogenetics, the chromosomal evolutionary viewpoint, and Michael White's signal contributions to the field
In the present hybrids, evaluation of the chromosome pairing at diakinesis (Figure 1a) revealed that quadrivalents occur, but in low frequency, ranging from one to three.
Meiotic behavior in Panicum maximum Jacq. (Poaceae: Panicoideae: Paniceae): hybrids and their genitors
During diakinesis, diploid chromosomes associate in bivalents; in triploids, univalents, bivalents, and trivalents are formed; and in tetraploids, univalents, bivalents, trivalents, and quadrivalents are formed.
Cytological study in diploid and polipoid populations of the Tripsacum genus/Estudio citologico en poblaciones diploides y poliploides del genero Tripsacum/Estudo citologico em populacoes diploides e poliploides do genero Tripsacum
During the early prophase, the sex chromosomes X and Y are positively heteropycnotic and remain in this condition until diakinesis.
Nuevas contribuciones al estudio de Corixoidea: caracterizacion citogenetica de tres especies de Sigara de Argentina y los posibles mecanismos de evolucion del cariotipo en Nepomorpha
The study was carried out through analysis of meiocytes in diakinesis and metaphase I, based on the meiotic configuration frequency.
Analisis meiotico de una cruza entre girasol cultivado (Helianthus annuus L. var. macrocarpus) y girasol silvestre (Helianthus annuus L. ssp. texanus Heiser)

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