diplotene


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diplotene

[′dip·lō‚tēn]
(cell and molecular biology)
The stage of meiotic prophase during which pairs of nonsister chromatids of each bivalent repel each other and are kept from falling apart by the chiasmata.
References in periodicals archive ?
Male diplotene nuclei show seven autosomal bivalents with one or two terminal or interstitial chiasmata, and one sex univalent (Fig.
Stage III (c) presents zygotene spermatocytes (Z), pachytene spermatocytes (P), diplotene spermatocytes (D), elongated spermatids (E), and Sertoli cells (S).
To summarize, the cell subtype percentages of zygotene and diplotene for CBZ-, IPR- and CCK-treated cell cultures followed the same decreasing trend compared with controls.
In Gagrella unicolor male meiosis the sex chromosomes are seen as one or two heteropycnotic bodies at early prophase I and as a heteromorphic pair from diplotene to metaphase I; furthermore they precede the migration of autosomes at both meiotic anaphases (Sharma and Dutta, 1959).
Dspite its infancy to preserve fertility and lack of studies, ovarian tissue cryopreservation has several potential advantages, such as the presence of many primordial follicles with oocyte arrest in diplotene of prophase of the first meiotic division, primordial follicles being theoretically less cryosensitive than mature oocyes, and preservation of the endocrinal function of the ovary.
The oocytes are arrested in the dictate stage, a prolonged diplotene stage of the first meiotic division also known as the germinal vesicle stage.
SYCP2 and SYCP3 are required for cohesin core integrity at diplotene but not for centromere cohesion at the first meiotic division.
Sertoli cell-selected AR knockout mice exhibit spermatogenesis arrest at the diplotene stage [1-3], similar to the phenotype of AR knockout mice.
El nucleo ovocitario presenta un prominente (nucleolo y los cromosomas en configuracion diplotene o lampbrush.(Fig.
1 b) appears entirely heterochromatic (positively heteropycnotic) from early diplotene (Fig.