Results 41 to 50 of about 1,619,726 (301)

Microsatellite distribution on sex chromosomes at different stages of heteromorphism and heterochromatinization in two lizard species (Squamata: Eublepharidae: Coleonyx elegans and Lacertidae: Eremias velox)

BMC Genetics, 2011
Background The accumulation of repetitive sequences such as microsatellites during the differentiation of sex chromosomes has not been studied in most squamate reptiles (lizards, amphisbaenians and snakes), a group which has a large diversity of sex ...
Kratochvíl Lukáš, Pokorná Martina, Kejnovský Eduard   +2 more
doaj   +1 more source

Labile sex expression in angiosperm species with sex chromosomes

, 2022
International audienceHere, we review the literature on sexual lability in dioecious angiosperm species with well-studied sex chromosomes. We distinguish three types of departures from strict dioecy, concerning either a minority of flowers in some ...
Méndez, Marcos, Käfer, Jos, Mousset, Sylvain, Marcos Méndez, Jos Käfer, Sylvain Mousset   +5 more
core   +1 more source

Chromosome mapping of repetitive sequences in Anostomidae species: implications for genomic and sex chromosome evolution

Molecular Cytogenetics, 2012
Background Members of the Anostomidae family provide an interesting model system for the study of the influence of repetitive elements on genome composition, mainly because they possess numerous heterochromatic segments and a peculiar system of female ...
da Silva Edson Lourenço, de Borba Rafael Splendore, Parise-Maltempi Patrícia Pasquali   +2 more
doaj   +1 more source

The sex chromosomes of the aging epigenome [PDF]

, 2020
Sex chromosomes are specialized chromosomes that determine the sex of individuals. They differ from an ordinary autosome in form, size, and behavior.
Tan, Qihua; id_orcid
core   +1 more source

Karyotype and male meiosis in Spartocera batatas and meiotic behaviour of multiple sex chromosomes in Coreidae (Heteroptera)

European Journal of Entomology, 2006
The Coreidae (Heteroptera) have holokinetic chromosomes and during male meiosis the autosomal bivalents segregate reductionally at anaphase I while the sex chromosomes do so equationally. The modal diploid chromosome number of the family is 2n = 21, with
María José FRANCO, María José BRESSA, Alba GRACIELA PAPESCHI   +2 more
doaj   +1 more source

Transitions in sex determination and sex chromosomes across vertebrate species [PDF]

, 2018
Despite the prevalence of sexual reproduction across eukaryotes, there is a remarkable diversity of sex determination mechanisms. The underlying causes of this diversity remain unclear, and it is unknown if there are convergent trends in the ...
Pennell, Matthew W.,, Peichel, CL, Pennell, Matthew W, Judith E. Mank, Mank, JE, Peichel, Catherine L.,, Mank, Judith E, Catherine L. Peichel, Matthew W. Pennell, Peichel, Catherine L, Mank, Judith E.,, Pennell, MW, Pennell MW, Mank JE, Peichel CL   +14 more
core   +2 more sources

Sex and media: Considerations for cell culture studies

ALTEX: Alternatives to Animal Experimentation, 2018
Cell culture has enhanced our understanding of cellular physiology and constitutes an important tool in advancing mechanistic insight. Researchers should be reminded, however, that there are limitations in extrapolating data derived from cultured cells ...
Roberta de Souza Santos, Aaron P. Frank, Biff F. Palmer, Deborah J. Clegg   +3 more
doaj   +1 more source

Bone Mineral Density After Contemporary Treatment for Acute Lymphoblastic Leukaemia: A Matched Cross‐Sectional Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Reduced bone mineral density (BMD) has been reported in survivors of childhood and young adult acute lymphoblastic leukaemia (ALL); however, data from cohorts treated with contemporary protocols and including matched controls remain limited.
Karen Schow Jensen, Mette Tiedemann Skipper, Niels Holtum Birkebæk, Kjeld Schmiegelow, Thomas Leth Frandsen, Bente Langdahl, Rikke Beck Jensen, Asger Roer Pedersen, Christian Mølgaard, Liv Andrés‐Jensen, Birgitte Klug Albertsen   +10 more
wiley   +1 more source

Genetic and cytological analyses reveal the recombination landscape of a partially differentiated plant sex chromosome in kiwifruit

BMC Plant Biology, 2019
Background Angiosperm sex chromosomes, where present, are generally recently evolved. The key step in initiating the development of sex chromosomes from autosomes is the establishment of a sex-determining locus within a region of non-recombination.
S. M. Pilkington, J. Tahir, E. Hilario, S. E. Gardiner, D. Chagné, A. Catanach, J. McCallum, L. Jesson, L. G. Fraser, M. A. McNeilage, C. Deng, R. N. Crowhurst, P. M. Datson, Q. Zhang   +13 more
doaj   +1 more source

Bone and Soft Tissue Neoplasms in Infants Versus Older Children: A Report From the Cancer in Young People in Canada Program

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims Infant bone and soft tissue neoplasms present distinct clinical challenges and lack large‐scale data to inform treatment decisions. This study aims to characterize bone and soft tissue neoplasms in infants in Canada and to compare their outcomes with those of older pediatric patients.
Samuel Sassine, Hallie Coltin, Maria Kondyli, Monia Marzouki, Nicolas Prud'homme, Nida Usmani, Rebecca J. Deyell, Lesleigh Abbott, Tony H. Truong, Sapna Oberoi, Ketan Kulkarni, Josée Brossard, Lynette Bowes, Paul Gibson, Sarah McKillop, Roona Sinha, Lillian Sung, Catherine Vezina, Laura Wheaton, Alexandra P. Zorzi, Marie‐Claude Pelland‐Marcotte, Thai Hoa Tran   +21 more
wiley   +1 more source