Results 41 to 50 of about 343,749 (184)

Conditional inactivation of the DNA damage response gene Hus1 in mouse testis reveals separable roles for components of the RAD9-RAD1-HUS1 complex in meiotic chromosome maintenance. [PDF]

PLoS Genetics, 2013
The RAD9-RAD1-HUS1 (9-1-1) complex is a heterotrimeric PCNA-like clamp that responds to DNA damage in somatic cells by promoting DNA repair as well as ATR-dependent DNA damage checkpoint signaling.
Amy M Lyndaker, Pei Xin Lim, Joanna M Mleczko, Catherine E Diggins, J Kim Holloway, Rebecca J Holmes, Rui Kan, Donald H Schlafer, Raimundo Freire, Paula E Cohen, Robert S Weiss   +10 more
doaj   +1 more source

Melatonin Protects Against Mdivi-1-Induced Abnormal Spindle Assembly and Mitochondrial Superoxide Production During Porcine Oocyte Maturation

Frontiers in Cell and Developmental Biology, 2021
Mitochondrial division inhibitor 1 (Mdivi-1) reportedly provides a close connection between oocyte maturation and mitochondrial function in pigs. N-acetyl-5-methoxy-tryptamine (melatonin) is known to be a representative antioxidant with the ability to ...
Seul-Gi Yang, Seul-Gi Yang, Seung-Yeon Joe, Seung-Yeon Joe, Jin-Wook Bae, Jin-Wook Bae, Gyeong-Deok Heo, Gyeong-Deok Heo, Hyo-Jin Park, Hyo-Jin Park, Deog-Bon Koo, Deog-Bon Koo   +11 more
doaj   +1 more source

Seed ageing and meiotic chromosomal abnormalities in lettuce.

CYTOLOGIA, 1989
Meiotic chromosomal abnormalities observed in lettuce plants grown from aged seeds increased with the decrease in the viability of the seed lot. Univalents, fragments and a few cases of precocious segregation were observed in metaphase I. Abnormalities found at anaphase I and anaphase II included dicentric bridges with or without fragments, acentric ...
Rao, N. K., Roberts, E. H.
openaire   +2 more sources

Meiotic behavior and its implications on the reproductive success of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. (Boraginaceae), an important medicinal plant of Trans-Himalaya

Caryologia
The present study reports the chromosome number, meiotic behavior and its relation with pollen fertility and seed set of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. The species shows a chromosome count of 2n = 2x = 14.
Irfan Iqbal Sofi, Shivali Verma, Aijaz H. Ganie, Namrata Sharma, Manzoor A. Shah   +4 more
doaj   +1 more source

Roles of Meiotic Defects in Pathogenesis of Primary Ovarian Insufficiency

Reproductive and Developmental Medicine, 2017
A matured oocyte has experienced three critical division stages: (1) proliferation in early fetal stage, (2) meiotic arrest at diplotene of prophase I, and (3) meiotic resumption and extrusion of the first polar body.
Ling Zhang, Qi-Qi Wang, Cheng-Qiu Tao, Cong-Jian Xu   +3 more
doaj   +1 more source

Abnormal meiotic recombination in infertile men and its association with sperm aneuploidy [PDF]

Human Molecular Genetics, 2007
Defects in early meiotic events are thought to play a critical role in male infertility; however, little is known regarding the relationship between early meiotic events and the chromosomal constitution of human sperm. Thus, we analyzed testicular tissue from 26 men (9 fertile and 17 infertile men), using immunofluorescent techniques to examine meiotic
Kyle A, Ferguson, Edgar Chan, Wong, Victor, Chow, Mark, Nigro, Sai, Ma   +4 more
openaire   +2 more sources

Detecció i incidència d'anomalies cromosòmiques en espermatozoides humans [PDF]

, 2000
Consultable des del TDXTítol obtingut de la portada digitalitzadaLes tècniques d'hibridació in situ fluorescent aplicades sobre nuclis d'espermatozoides humans prèviament descondensats permeten la seva caracterització citogenètica i, en conseqüència ...
Blanco Rodríguez, Joan, Blanco, Joan
core   +1 more source

The scaffold nucleoporins SAR1 and SAR3 are essential for proper meiotic progression in Arabidopsis thaliana

Frontiers in Cell and Developmental Biology, 2023
Nuclear Pore Complexes (NPCs) are embedded in the nuclear envelope (NE), regulating macromolecule transport and physically interacting with chromatin. The NE undergoes dramatic breakdown and reformation during plant cell division.
Nadia Fernández-Jiménez, Marina Martinez-Garcia, Javier Varas, Félix Gil-Dones, Juan Luis Santos, Mónica Pradillo   +5 more
doaj   +1 more source

Four Loci on Abnormal Chromosome 10 Contribute to Meiotic Drive in Maize [PDF]

Genetics, 2003
Abstract We provide a genetic analysis of the meiotic drive system on maize abnormal chromosome 10 (Ab10) that causes preferential segregation of specific chromosomal regions to the reproductive megaspore. The data indicate that at least four chromosomal regions contribute to meiotic drive, each providing distinct functions that can be ...
Evelyn N, Hiatt, R Kelly, Dawe
openaire   +2 more sources

A meiotic study of two translocations and a tertiary trisomic in the mouse (Mus musculus) [PDF]

, 1975
In this section, the order of the articles has not been closely followed. Each point ends with the number(s) of the article(s) (as given in the contents), where the conclusion is based on.1) Cytological meiotic studies of T(2;8)26H and T(1;13)70H ...
Boer, P., de, de Boer, P.
core