Results 51 to 60 of about 3,094 (169)

Virtual brain endocasts of the palaeanodont Metacheiromys marshi and the neurosensory evolution of early Pholidotamorpha

Journal of Anatomy, EarlyView.
We describe the endocranial anatomy of Metacheiromys marshi. Decrease in olfaction and eye movement control occurred through time in Pholidotamorpha and is likely linked to fossorial adaptations. The development of the orbital gyrus might be related to the evolution of myrmecophagy and the emergence of a protrusile tongue in early Pholidotamorpha ...
Eduard Cabasés Bru, Raquel Moya‐Costa, John R. Wible, Stephen L. Brusatte, Ornella C. Bertrand   +4 more
wiley   +1 more source

Meiotic abnormalities in metaphase I human spermatocytes from infertile males: frequencies, chromosomes involved, and the relationships with polymorphic karyotype and seminal parameters

Asian Journal of Andrology, 2014
The aim of this study was to look in depth at the relationship between meiotic anomalies and male infertility, such as the determination of the chromosomes involved or the correlation with patient features.
Zaida Sarrate, Francesca Vidal, Joan Blanco   +2 more
doaj   +1 more source

UNIVERSALITY IN THE CLIMATE CATASTROPHE: RETHINKING CHAKRABARTY'S ANTHROPOCENE PHILOSOPHY OF HISTORY WITH MERLEAU‐PONTY'S PHILOSOPHY OF NATURE

History and Theory, Volume 65, Issue 2, Page 159-179, June 2026.
ABSTRACT This article critically examines Dipesh Chakrabarty's concept of Anthropocene history, a philosophy of history that is designed to respond to the universal challenge of the Anthropocene. It uses the work of Maurice Merleau‐Ponty to mitigate the pitfalls of Chakrabarty's concept and to propose an alternative relation between nature and history.
Andréa Delestrade
wiley   +1 more source

ZSL Orchestrates Synaptonemal Complex Assembly as a Central Region Scaffold to Ensure Synapsis Fidelity and Crossover Control in Polyploid Meiosis

Advanced Science, Volume 13, Issue 27, 13 May 2026.
A central molecular adaptor, ZSL, is identified that links transverse filaments ZYP1 to central element SCEP1/2 to drive synaptonemal complex assembly in Brassica napus. Loss of ZSL abolishes synaptonemal complex formation, disrupts meiotic chromosome segregation, and markedly increases crossovers, providing mechanistic insight into meiotic fidelity ...
Miaowei Geng, Shaochen Jia, Fei Cao, Cuiping Liu, Heshuang Zhang, Gang Xu, Jixin Zhuang, Yashi Zhang, Can Liu, Yuhang Zhao, Zilin Guo, Xinjie Yuan, Jiaqing Yang, Lei Chu, Bowei Cai, Hu Zhao, Chao Yang   +16 more
wiley   +1 more source

Retinal Pathology and Synucleinopathy in the Visual Pathway of α‐Synuclein Preformed Fibril Mouse Model of Parkinson's Disease

Brain and Behavior, Volume 16, Issue 5, May 2026.
Schematic summary of visual electrophysiology and retinal and brain pathology. The diagram integrates PVEP abnormalities, retinal pathology, and brain pathology in PFF‐injected mice. Based on behavioral outcomes, the three groups were categorized as control, prodromal PD, and PD, corresponding to the PBS, 3‐month PFF (3 MPI), and 6‐month PFF (6 MPI ...
Qin Zhang, Xin‐Yi Qian, Tao Peng, Xiao‐Ou Hou, Zhen‐Yuan Ma, Jiang Huang, Li‐Fang Hu, Wei‐Feng Luo   +7 more
wiley   +1 more source

Recombination suppression in plant adaptation and speciation

New Phytologist, Volume 250, Issue 4, Page 2061-2077, May 2026.
Summary Recombination suppression is increasingly recognized as an important facilitator of genomic divergence and speciation, especially under ongoing gene flow. In plants, however, the broader evolutionary consequences and the mechanisms by which recombination suppression arises and spreads are still incompletely understood, reflecting the inherent ...
Xu Zhang, Yisi Hu, Kaichi Huang, Stephen I. Wright, Loren H. Rieseberg   +4 more
wiley   +1 more source

A molecular cell biology toolkit for the study of meiosis in the silkworm Bombyx mori

G3: Genes, Genomes, Genetics, 2023
Meiosis is usually described as 4 essential and sequential processes: (1) homolog pairing; (2) synapsis, mediated by the synaptonemal complex; (3) crossing over; and (4) segregation.
Youbin Xiang, Dai Tsuchiya, Fengli Guo, Jennifer Gardner, Scott McCroskey, Andrew Price, Eelco C Tromer, James R Walters, Cathleen M Lake, R Scott Hawley   +9 more
doaj   +1 more source

Brain Morphology and Quantitative Assessment of Sensory Brain Areas in Southern Bluefin Tuna, Thunnus maccoyii (Scombridae, Teleostei)

Journal of Comparative Neurology, Volume 534, Issue 4, April 2026.
The absolute and relative volume of major sensory and integrative brain regions of the southern bluefin tuna Thunnus maccoyii are examined using magnetic resonance imaging (MRI). A dominant cerebellum projects into the midbrain ventricular space, while the optic tectum represents a smaller proportion of total brain volume than previously estimated ...
Myoung Hoon Ha, Lucille Chapuis, Rebecca Glarin, Bradford Moffat, David K. Wright, Travis L. Dutka, Julian Pepperell, Caroline C. Kerr, Kara E. Yopak, Shaun P. Collin   +9 more
wiley   +1 more source

Karyotype evolution in progress: A new diploid number in Belostoma candidulum (Heteroptera: Belostomatidae) from Argentina leading to new insights into its ecology and evolution

European Journal of Entomology, 2014
A novel chromosome complement (2n = 14 = 12 + XY/XX; male/female sex chromosomes), male meiosis behaviour, heterochromatin characterization, and frequency and distribution of chiasmata are described for the first time in specimens from a natural ...
Mónica G. CHIRINO, María J. BRESSA
doaj   +1 more source

Assessing Optic Nerve Involvement in Multiple Sclerosis Using Optical Coherence Tomography and Magnetic Resonance Imaging

European Journal of Neurology, Volume 33, Issue 4, April 2026.
The IED cutoff (GCIPL ≥ 4 μm or pRNFL ≥ 6 μm) showed 83% sensitivity and 55% specificity for detecting prior optic neuritis, and 67% sensitivity with 83% specificity for identifying asymptomatic optic nerve lesions in patients without prior history of optic neuritis.
Gualco Alessandro, Boffa Giacomo, Razzetta Chiara, Lapucci Caterina, Cipriano Emilio, Nasone Lorenza, Sirito Tommaso, Al Qudsi Sabrina, Garbarino Sara, Saitta Laura, Campi Cristina, Iester Michele, Cellerino Maria, Inglese Matilde   +13 more
wiley   +1 more source