Results 21 to 30 of about 436,984 (262)

Y/X-Chromosome-Bearing Sperm Shows Elevated Ratio in the Left but Not the Right Testes in Healthy Mice

open access: yesLife, 2021
The sex chromosomes play central roles in determining the sex of almost all of the multicellular organisms. It is well known that meiosis in mammalian spermatogenesis produces ~50% Y- and ~50% X-chromosome-bearing sperm, a 1:1 ratio. Here we first reveal
Chengqing Hu   +4 more
doaj   +1 more source

The genetic and cultural impact of the Steppe migration into Europe

open access: yesAnnals of Human Biology, 2021
Background During the early 3rd millennium BCE migration from Pontic Steppe, mainly related to Yamnaya culture, has affected European populations both culturally and genetically, however, it has long been debated to what extent this migration was male ...
Gabriele Scorrano   +4 more
doaj   +1 more source

Complete or partial loss of the Y chromosome in an unselected cohort of 865 non-vasectomized, azoospermic men

open access: yesBasic and Clinical Andrology, 2023
Background Structural abnormalities as well as minor variations of the Y chromosome may cause disorders of sex differentiation or, more frequently, azoospermia.
J Fedder   +6 more
doaj   +1 more source

The Origins of the Royal Spanish Surname Castilla: Genetics and Genealogy

open access: yesGenealogy, 2023
In most Western European societies, surnames pass from generation to generation and in cases where surnames are shared by fathers to children, the Y chromosome passes down from fathers to male offspring in the same way as surnames do.
Ana María López-Parra   +3 more
doaj   +1 more source

The Y chromosome

open access: yesReproductive BioMedicine Online, 2002
The Y chromosome has evolved to provide sex determination in mammals. In association with its evolution, genes important for spermatogenesis have been sequestered on this chromosome. Further, X chromosome inactivation has developed as a mechanism to prevent over-expression of genetic factors important for somatic function in females, with maintenance ...
openaire   +2 more sources

THE Y CHROMOSOME OF DROSOPHILA PSEUDOOBSCURA [PDF]

open access: yesGenetics, 1935
Uploaded by Plazi for TaxoDros. We do not have abstracts.
openaire   +4 more sources

Y-Chromosome Microdeletions: A Review of Prevalence, Screening, and Clinical Considerations

open access: yesThe Application of Clinical Genetics, 2021
Matthew J Rabinowitz, Phillip J Huffman, Nora M Haney, Taylor P Kohn The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USACorrespondence: Taylor P KohnJames Buchanan Brady Urological Institute ...
Rabinowitz MJ   +3 more
doaj  

Y chromosome functions in mammalian spermatogenesis

open access: yeseLife, 2021
The mammalian Y chromosome is critical for male sex determination and spermatogenesis. However, linking each Y gene to specific aspects of male reproduction has been challenging.
Jeremie Subrini, James Turner
doaj   +1 more source

GENDER ASSIGNMENT IN COMPLETE ANDROGEN INSENSITIVITY SYNDROME. WHO SHOULD BE THE DECISION MAKER

open access: yesPakistan Armed Forces Medical Journal, 2020
Androgen insensitivity syndrome (AIS) is a condition in which the target cells are unable to respond to androgenic hormones. This inability can be complete or partial.
Naveed Ahmed   +6 more
doaj   +2 more sources

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