Results 41 to 50 of about 36,690 (245)
Crossover frequencies in spermatocytes of Robertsonian homozygotes and heterozygotes of Mus musculus domesticus [PDF]
Genetics and Molecular BiologyCrossovers (COs) generate genetic diversity and proper homologous chromosome segregation during meiosis. Mus musculus domesticus, with a diploid number of 2n=40, has 19 autosomal pairs plus one sex chromosome pair all of which are telocentric chromosomes.
Eliana Ayarza +3 more
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Ribogospodarsʹka Nauka UkraïniPurpose. To conduct histological studies of sterlet spermatogenesis in technogenic conditions. To determine the level of reproductive system disorders, to identify possible causes of abnormalities.
М. Koziy
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The role of tyrosine phosphatase Shp2 in spermatogonial differentiation and spermatocyte meiosis
Asian Journal of Andrology, 2020 The transition from spermatogonia to spermatocytes and the initiation of meiosis are key steps in spermatogenesis and are precisely regulated by a plethora of proteins. However, the underlying molecular mechanism remains largely unknown.
Yang Li +11 more
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Dynamic sex chromosome expression in Drosophila male germ cells
Nature Communications, 2021 Sex chromosome gene content and expression is unusual. Here the authors use single cell RNA-Seq on Drosophila larvae to demonstrate that the single X and pair of 4th chromosomes are specifically inactivated in primary spermatocytes, while genes on the ...
Sharvani Mahadevaraju +22 more
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The spermatocytic seminoma: views on pathogenesis [PDF]
International Journal of Andrology, 1987 The spermatocytic seminoma has clinical and histological characteristics which differ from those of other germ cell tumours of the testis. Classical seminomas and teratomas are believed to originate from intratubular carcinoma‐in‐situ (CIS), which is almost invariably found adjacent to these neoplasms. In addition, DNA analysis of these tumours and the
J, Müller +2 more
openaire +2 more sources
Veterinární Medicína, 2016 The purpose of this study was to evaluate the consequences of bisphenol A (BPA) exposure in zebrafish (Danio rerio). Short-term effects at a testes level were assessed by means of different biomarkers in 60 male zebrafish exposed for 14 days in aquariums
A.J. Lora +5 more
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FEBS Open Bio, EarlyView.dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon +6 more
wiley +1 more source
A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]
, 2016 Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo +4 more
core +2 more sources
Stress Resilience of Spermatozoa and Blood Mononuclear Cells without Prion Protein
Frontiers in Molecular Biosciences, 2018 The cellular prion protein PrPC is highly expressed in neurons, but also present in non-neuronal tissues, including the testicles and spermatozoa. Most immune cells and their bone marrow precursors also express PrPC.
Malin R. Reiten +17 more
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TDRD6 mediates early steps of spliceosome maturation in primary spermatocytes. [PDF]
PLoS Genetics, 2017 Tudor containing protein 6 (TDRD6) is a male germ line-specific protein essential for chromatoid body (ChB) structure, elongated spermatid development and male fertility.
Müge Akpınar +6 more
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