Results 41 to 50 of about 3,094 (169)

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

A mutation in the endonuclease domain of mouse MLH3 reveals novel roles for MutLγ during crossover formation in meiotic prophase I.

PLoS Genetics, 2019
During meiotic prophase I, double-strand breaks (DSBs) initiate homologous recombination leading to non-crossovers (NCOs) and crossovers (COs). In mouse, 10% of DSBs are designated to become COs, primarily through a pathway dependent on the MLH1-MLH3 ...
Melissa Toledo, Xianfei Sun, Miguel A Brieño-Enríquez, Vandana Raghavan, Stephen Gray, Jeffrey Pea, Carolyn R Milano, Anita Venkatesh, Lekha Patel, Peter L Borst, Eric Alani, Paula E Cohen   +11 more
doaj   +1 more source

“Hands‐On” white matter anatomy: Using Air Anatomy gestures and tractography on simple brain sections to enhance teaching of white matter directions

Anatomical Sciences Education, EarlyView.
Abstract Teaching white matter (WM) anatomy to undergraduates is challenging. This is partly because WM fibers are oriented intricately and Klingler's dissection, the gold standard method used to demonstrate it, often requires time, advanced anatomical knowledge, and refined dissection skills.
Doris George Yohannan, Rohini Punja, Thomas Iype, Chandrasekharan Kesavadas, Bejoy Thomas, Kannanvilakom Govindapillai Umesan, Aswathy Maria Oommen, Usha Devi Keezhathil Bhargavi   +7 more
wiley   +1 more source

The highly rearranged karyotype of the hangingfly Bittacus sinicus (Mecoptera, Bittacidae): the lowest chromosome number in the order [PDF]

Comparative Cytogenetics, 2020
Cytogenetic features of the hangingfly Bittacus sinicus Issiki, 1931 were investigated for the first time using C-banding and DAPI (4',6-diamidino-2-phenylindole) staining. The karyotype analyses show that the male B.
Ying Miao, Bao-Zhen Hua
doaj   +3 more sources

Phenotypic Exploration in Patients with Heterozygous Variant in AFG3L2 Gene: A Case‐Series and Literature Review

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Variants in AFG3‐Like Matrix AAA Peptidase, Subunit 2 (AFG3L2) gene are associated with diverse clinical phenotypes. Here, we describe phenotypic findings of two unrelated children with de novo heterozygous variant and one family with inherited heterozygous variant in AFG3L2 gene.
Sangeetha Yoganathan, Laura Tochen, Jacky Ganguly, Sayoni Roy Chowdhury, Haya S AlFaris, Vivek Pai, Andrea LeBlanc‐Millar, Sara Breitbart, Hrishikesh Kumar, Manohar Shroff, Arun Reginald, Grace Yoon, Alfonso Fasano, George M Ibrahim, Carolina Gorodetsky   +14 more
wiley   +1 more source

THE ORIGIN AND BEHAVIOUR OF CHIASMATA

The Biological Bulletin, 1932
1. A study of meiosis in male Chorthippus elegans, Acrididae (2n = 16 + X) shows the chromosome behaviour to be similar to that already described in Stenobothrus parallelus. Thus the chiasma frequency is an indirect function of length and has an interference curve of variation.
openaire   +5 more sources

Heterochromatin heteromorphism in Holhymenia rubiginosa (Heteroptera: Coreidae)

European Journal of Entomology, 2008
Heterochromatin is one of the most dynamic components in the genome of species. Previous studies on the heterochromatin content and distribution in Heteroptera (insects with holokinetic chromosomes) have shown that the species belonging to the family ...
María José BRESSA, María José FRANCO, María Ayelén TOSCANI, Alba GRACIELA PAPESCHI   +3 more
doaj   +1 more source

Chromosome separation during Drosophila male meiosis I requires separase-mediated cleavage of the homolog conjunction protein UNO.

PLoS Genetics, 2020
Regular chromosome segregation during the first meiotic division requires prior pairing of homologous chromosomes into bivalents. During canonical meiosis, linkage between homologous chromosomes is maintained until late metaphase I by chiasmata resulting
Joe Weber, Zeynep Kabakci, Soumya Chaurasia, Erich Brunner, Christian F Lehner   +4 more
doaj   +1 more source

ATXR5 and ATXR6 restrict meiotic crossover formation within heterochromatin in Arabidopsis

Journal of Integrative Plant Biology, EarlyView.
The Arabidopsis H3K27 mono‐methyltransferases ATXR5 and ATXR6 repress crossovers within meiotic heterochromatin, are required for heterochromatin condensation and H3K27me1 establishment, and specifically influence the maintenance of DNA methylation in meiocytes.
Jun Zhang, Yue Yu, Han Wang, Meiling Li, Dingning Li, Chenjiang You, Yingxiang Wang, Cong Wang   +7 more
wiley   +1 more source

Comparison of meiotic transcriptomes of three maize inbreds with different origins reveals differences in cell cycle and recombination

BMC Genomics, 2022
Background Cellular events during meiosis can differ between inbred lines in maize. Substantial differences in the average numbers of chiasmata and double-strand breaks (DSBs) per meiotic cell have been documented among diverse inbred lines of maize ...
Nelson Garcia, Lu Yin, Stefanie Dukowic-Schulze, Claire Milsted, Penny M. A. Kianian, Shahryar Kianian, Wojciech P. Pawlowski, Changbin Chen   +7 more
doaj   +1 more source