Results 31 to 40 of about 653 (155)

Chromosome and nuclear DNA study on Luzula - a genus with holokinetic chromosomes

Genome, 2004
Chromosomes and nuclear DNA amount were analyzed in leaf tissues of Luzula nivea, Luzula luzuloides, and Luzula multiflora. Intra- and interspecific karyological variability was stated. Chromosome numbers in diploids ranged 2n = 8-24 in L. nivea and L. luzuloides and 2n = 12-84 in hexaploid L. multiflora.
Elzbieta, Kuta, Borut, Bohanec, Ewa, Dubas, Liliana, Vizintin, Leslaw, Przywara   +4 more
openaire   +4 more sources

Cytogenetics of the true bug infraorder Cimicomorpha (Hemiptera, Heteroptera): a review

ZooKeys, 2011
The Cimicomorpha is one of the largest and highly diversified infraorders of the Heteroptera. This group is also highly diversified cytogenetically and demonstrates a number of unusual cytogenetic characters such as holokinetic chromosomes; m-chromosomes;
Valentina Kuznetsova, Snejana Grozeva, Seppo Nokkala, Christina Nokkala   +3 more
doaj   +1 more source

The significance of cytogenetics for the study of karyotype evolution and taxonomy of water bugs (Heteroptera, Belostomatidae) native to Argentina [PDF]

, 2013
Male meiosis behaviour and heterochromatin characterization of three big water bug species were studied. Belostoma dentatum (Mayr, 1863), B. elongatum Montandon, 1908 and B. gestroi Montandon, 1903 possess 2n = 26 + X1X2Y (male).
Bressa, Maria Jose, Chirino, Monica Gabriela, Papeschi, Alba Graciela   +2 more
core   +2 more sources

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

Holocentric Chromosomes of Luzula elegans Are Characterized by a Longitudinal Centromere Groove, Chromosome Bending, and a Terminal Nucleolus Organizer Region [PDF]

, 2011
The structure of holocentric chromosomes was analyzed in mitotic cells of Luzula elegans. Light and scanning electron microscopy observations provided evidence for the existence of a longitudinal groove along each sister chromatid.
A. Houben, Albertson DG, Albertson DG, Allshire RC, Bizzaro D, Black BE, Black BE, Black BE, Braselton JP, Buchwitz BJ, Carroll CW, Cattani MV, Comings DE, Cox AV, da Silva CR, Dernburg AF, Desai A, E. Schroeder-Reiter, Earnshaw WC, Fuchs J, Fukova I, G. Wanner, Gerlach WL, Guerra M, Guerra M, Houben A, Howe M, K. Kumke, K. Nagaki, Kato A, Kitagawa R, L. Ma, M. Murata, Maddox PS, Madej A, Mandakova T, Mandrioli M, Martin R, Moore LL, Nagaki K, Papeschi AG, Pimpinelli S, Raska I, Rebagliati PJ, S. Heckmann, Schneider MC, Schroeder-Reiter E, Sekulic N, Sullivan KF, Valarik M, Vanzela ALL, Vanzela ALL, Viera A, Wanner G   +53 more
core   +1 more source

Detection of genetic incompatibilities in non-model systems using simple genetic markers: hybrid breakdown in the haplodiploid spider mite Tetranychus evansi [PDF]

, 2016
When two related species interbreed, their hybrid offspring frequently suffer from reduced fitness. The genetics of hybrid incompatibility are described by the Bateson–Dobzhansky–Muller (BDM) model, where fitness is reduced by epistatic interactions ...
Egas M, Kiers E T, Knegt B, Pearson N A, Potter T, Sato Y, Schimmel B C J, Staudacher H, 佐藤 幸恵   +8 more
core   +7 more sources

Cytogenetic studies on Mepraia gajardoi (Heteroptera: Reduviidae). Chromosome behaviour in a spontaneous translocation mutant

European Journal of Entomology, 2004
We analysed the chromosome complement and male meiosis in a natural population of Mepraia gajardoi (Hemiptera: Reduviidae: Triatominae). The normal karyotype of this species is 20 autosomes plus X1X2Y in males and X1X1X2X2 in females. We confirmed that M.
Ruben PÉREZ, Lucia CALLEROS, Virginia ROSE, Myriam LORCA, Francisco PANZERA   +4 more
doaj   +1 more source

The Effect of X-Rays on Cytological Traits of Tuta absoluta (Lepidoptera: Gelechiidae) [PDF]

, 2016
The tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most important pests of tomato. With the purpose of developing environmentally friendly control tactics such as the inherited sterility (IS) technique against this ...
Cagnotti, Cynthia Lorena, Carabajal Paladino, Leonela Zusel, Ferrari, María Edith, Lauría, Juan P., López, Silvia Noelí, Síchová, Jindra   +5 more
core   +1 more source

Extensive conserved synteny of genes between the karyotypes of Manduca sexta and Bombyx mori revealed by BAC-FISH mapping. [PDF]

PLoS ONE, 2009
BACKGROUND: Genome sequencing projects have been completed for several species representing four highly diverged holometabolous insect orders, Diptera, Hymenoptera, Coleoptera, and Lepidoptera. The striking evolutionary diversity of insects argues a need
Yuji Yasukochi, Makiko Tanaka-Okuyama, Fukashi Shibata, Atsuo Yoshido, Frantisek Marec, Chengcang Wu, Hongbin Zhang, Marian R Goldsmith, Ken Sahara   +8 more
doaj   +1 more source

Dynamic karyotype evolution and unique sex determination systems in Leptidea wood white butterflies [PDF]

, 1943
[Background] Chromosomal rearrangements have the potential to limit the rate and pattern of gene flow within and between species and thus play a direct role in promoting and maintaining speciation.
Šíchová, Jindra, Voleníková, Anna, Dincă, Vlad, Nguyen, Petr, Vila, Roger, Sahara, Ken, Marec, František   +6 more
core   +1 more source