Results 41 to 50 of about 10,690,340 (404)

The Y chromosome sequence of the channel catfish suggests novel sex determination mechanisms in teleost fish

open access: yesBMC Biology, 2019
BackgroundSex determination mechanisms in teleost fish broadly differ from mammals and birds, with sex chromosomes that are far less differentiated and recombination often occurring along the length of the X and Y chromosomes, posing major challenges for
Lisui Bao   +20 more
semanticscholar   +1 more source

Sex chromosome positions in human interphase nuclei as studied by in situ hybridization with chromosome specific DNA probes [PDF]

open access: yes, 1984
Two cloned repetitive DNA probes, pXBR and CY1, which bind preferentially to specific regions of the human X and Y chromosome, respectively, were used to study the distribution of the sex chromosomes in human lymphocyte nuclei by in situ hybridization ...
C. R. M�ller   +30 more
core   +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

Characteristics of spermatogenesis in infertile men with the AZFc region deletions

open access: yesАндрология и генитальная хирургия, 2014
Spermatogenetic defects were analyzed in the cohort of 218 russian infertile men with various AZFc region deletions of the Y chromosome. Clear differences were found in both the percentage of pathozoospermia forms and sperm concentration between ...
V. B. Chernykh   +7 more
doaj   +1 more source

The role of Beringia in human adaptation to Arctic conditions based on results of genomic studies of modern and ancient populations

open access: yesВавиловский журнал генетики и селекции, 2023
The results of studies in Quaternary geology, archeology, paleoanthropology and human genetics demonstrate that the ancestors of Native Americans arrived in mid-latitude North America mainly along the Pacific Northwest Coast, but had previously inhabited
B. A. Malyarchuk
doaj   +1 more source

Genetic predisposition to mosaic Y chromosome loss in blood

open access: yesbioRxiv, 2019
Mosaic loss of chromosome Y (LOY) in circulating white blood cells is the most common form of clonal mosaicism1–5, yet our knowledge of the causes and consequences of this is limited. Here, using a computational approach, we estimate that 20% of the male
Deborah J. Thompson   +50 more
semanticscholar   +1 more source

Linear assembly of a human centromere on the Y chromosome

open access: yesNature Biotechnology, 2018
The human genome reference sequence remains incomplete owing to the challenge of assembling long tracts of near-identical tandem repeats in centromeres.
Miten Jain   +9 more
semanticscholar   +1 more source

Heterochromatin-Enriched Assemblies Reveal the Sequence and Organization of the Drosophila melanogaster Y Chromosome

open access: yesGenetics, 2018
Heterochromatic repeat-rich regions are often missing from even the best genome assemblies. Chang and Larracuente designed a de novo assembly strategy to improve the Drosophila melanogaster assembly in heterochromatin, extending the reference assembly by
Ching-Ho Chang, A. Larracuente
semanticscholar   +1 more source

The early evolutionary history of neo-sex chromosomes in Neotropical grasshoppers, Boliviacris noroestensis (Orthoptera: Acrididae: Melanoplinae) [PDF]

open access: yes, 2014
Neo-sex chromosomes are an important component of chromosome variation in Orthoptera, particularly South American Melanoplinae species, which have proven to be outstanding experimental model system to study the mechanism of sex chromosome evolution in ...
Castillo, Elio Rodrigo Daniel   +2 more
core   +1 more source

Horse Y chromosome assembly displays unique evolutionary features and putative stallion fertility genes

open access: yesNature Communications, 2018
Dynamic evolutionary processes and complex structure make the Y chromosome among the most diverse and least understood regions in mammalian genomes.
J. Janecka   +19 more
semanticscholar   +1 more source

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