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ZW sex chromosome differentiation in paleognathous birds is associated with mitochondrial effective population size but not mitochondrial genome size or mutation rate.
Genome Biol Evol
January 2025
Department of Molecular and Cell Biology, University of California-Merced, Merced, CA 95343.
Eukaryotic genome size varies considerably, even among closely related species. The causes of this variation are unclear, but weak selection against supposedly costly "extra" genomic sequences has been central to the debate for over 50 years. The mutational hazard hypothesis, which focuses on the increased mutation rate to null alleles in superfluous sequences, is particularly influential, though challenging to test.
View Article and Find Full Text PDFMaternal X chromosome pericentric inversion resulting in the genetic analysis of offspring pedigrees with deletions at Xp22.33 and Xp22.33p11.3, and duplications at Xq27.3q28: Case report.
Medicine (Baltimore)
January 2025
Reproductive Medicine Center, Yulin Maternal and Child Health Care Hospital, Yulin, Guangxi, China.
Rationale: This study investigates the genetic cause of primary infertility and short stature in a woman, focusing on maternal X chromosome pericentric inversion and its impact on offspring genetic outcomes, including deletions at Xp22.33 and Xp22.33p11.
View Article and Find Full Text PDFNovel insights into sheep domestication in Southwest Asia based on genome-wide sequencing.
Anim Genet
February 2025
Institute of Animal Husbandry and Veterinary Medicine, Jilin Academy of Agricultural Sciences (Northeast Agricultural Research Center of China), Gongzhuling, China.
The origin of domestic sheep (Ovis aries) can be traced back to the Asian mouflon (Ovis gmelini), in the Near East around 10 000 years ago. Genetic divergence within mouflon populations can occur due to factors such as geographical isolation, social structures, and environmental pressures, leading to different affinities with domestic sheep. However, few studies have reported the extent to which mouflon sheep contribute to domestic sheep in different regions.
View Article and Find Full Text PDFMicronucleus counts correlating with male infertility: a clinical analysis of chromosomal abnormalities and reproductive parameters.
Asian J Androl
January 2025
Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou 510150, China.
Investigating the correlation between micronucleus formation and male infertility has the potential to improve clinical diagnosis and deepen our understanding of pathological progression. Our study enrolled 2252 male patients whose semen was analyzed from March 2023 to July 2023. Their clinical data, including semen parameters and age, were also collected.
View Article and Find Full Text PDFHigh genetic variation, low differentiation, and Pleistocene expansions of the migratory and endangered long-nosed tequila bat, Leptonycteris nivalis, inferred using both maternal and paternal genetic markers.
PLoS One
January 2025
Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Ciudad de México, México.
Tequila bats (genus Leptonycteris) have gained attention for their critical role in pollinating different plant species, especially Agave spp. and columnar cacti. Leptonycteris nivalis is the largest nectar-feeding bat in the Americas, and the females exhibit migratory behavior during the breeding season.
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