Results 51 to 60 of about 123,490 (101)

Variability in the karyotypes, testes and ovaries of planthoppers of the families Issidae, Caliscelidae, and Acanaloniidae (Hemiptera: Fulgoroidea)

European Journal of Entomology, 2006
The aim of this study was to obtain information on the karyotypes, testes and ovaries of three fulgoroid families, mainly in the Issidae but also in the Caliscelidae and Acanaloniidae. For the Issidae, the data is for 19 species belonging to 11 genera of
Anna MARYAŃSKA-NADACHOWSKA, Valentina G. KUZNETSOVA, Vladimir M. GNEZDILOV, Sakis DROSOPOULOS   +3 more
doaj   +1 more source

Holocentric Karyotype Evolution in Rhynchospora Is Marked by Intense Numerical, Structural, and Genome Size Changes

Frontiers in Plant Science, 2020
Cyperaceae is a family of Monocotyledons comprised of species with holocentric chromosomes that are associated with intense dysploidy and polyploidy events.
Paula Burchardt, Christopher E. Buddenhagen, Marcos L. Gaeta, Murilo D. Souza, André Marques, André L. L. Vanzela   +5 more
doaj   +1 more source

Distribution of 45S rDNA sites in chromosomes of plants: Structural and evolutionary implications

BMC Evolutionary Biology, 2012
Background 45S rDNA sites are the most widely documented chromosomal regions in eukaryotes. The analysis of the distribution of these sites along the chromosome in several genera has suggested some bias in their distribution.
Roa Fernando, Guerra Marcelo
doaj   +1 more source

Painting of human chromosomes with probes generated from hybrid cell lines by PCR with Alu and L1 primers [PDF]

, 1990
Specific amplification of human sequences of up to several kb length has recently been accomplished in man-hamster and man-mouse somatic hybrid cell DNA by IRS-PCR (interspersed repetitive sequence — polymerase chain reaction).
Riethman, Harold C., Cremer, Thomas, Lengauer, Christoph   +2 more
core   +1 more source

Evolutionary strata on the X chromosomes of the dioecious plant Silene latifolia: Evidence from new sex-linked genes [PDF]

, 2007
Despite its recent evolutionary origin, the sex chromosome system of the plant Silene latifolia shows signs of progressive suppression of recombination having created evolutionary strata of different X-Y divergence on sex chromosomes. However, even after
Bergero, Roberta, Forrest, Alan, Kamau, Esther, Charlesworth, Deborah   +3 more
core   +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

Suitability of a CMV/EGFP cassette to monitor stable expression from human artificial chromosomes but not transient transfer in the cells forming viable clones [PDF]

, 2004
Human artificial chromosomes (HACs) were generated by transfer of telomerized PAC constructs containing alpha satellite DNA of various human chromosomes. To monitor which cells took up constructs and subsequently formed stable clones under blasticidin S (
Laner, A., Schindelhauer, D., Christan, S., Schwarz, T., Laner, A.;Schwarz, T.;Christan, S.;Schindelhauer, D.   +4 more
core   +1 more source

Karyotype and male pre-reductional meiosis of the sharpshooter Tapajosa rubromarginata (Hemiptera: Cicadellidae)

Revista de Biología Tropical, 2011
Cicadellidae in one of the best represented families in the Neotropical Region, and the tribe Proconiini comprises most of the xylem-feeding insects, including the majority of the known vectors of xylem-born phytopathogenic organisms. The cytogenetics of
Graciela R de Bigliardo, Eduardo Gabriel Virla, Sara Caro, Santiago Murillo Dasso   +3 more
doaj   +2 more sources

Autosomal univalents as a common meiotic feature in Jadera haematoloma (Herrich-Schaeffer, 1847) and Jadera sanguinolenta (Fabricius, 1775) (Heteroptera: Rhopalidae: Serinethinae)

European Journal of Entomology, 2001
So far, available cytogenetic data on 24 species of Rhopalidae reveal a male diploid chromosome number of 13, with a pair of m chromosomes and an X0/XX (male/female) sex chromosome determining system.
María José BRESSA, Alba G. PAPESCHI, Liliana MOLA, Marcelo L. LARRAMENDY   +3 more
doaj   +1 more source

Mitotic chromosomes are compacted laterally by KIF4 and condensin and axially by topoisomerase IIα [PDF]

, 2012
© 2012 Samejima et al. This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication dateMitotic chromosome formation involves a relatively minor ...
Cooke, C.A., Lydia C. Green, Itaru Samejima, Flavia de Lima Alves, Farr, CJ, Samejima, I., Earnshaw, W.C., Samejima, K., Vagnarelli, P., Kelly, D.A., Kerr, A., David A. Kelly, Hudson, DF, Hudson, D.F., Carol A. Cooke, Kerr, A, Vargiu, G., Cooke, CA, Giulia Vargiu, Hiromi Ogawa, Green, LC, Alves, FDL, Damien F. Hudson, Ogawa, H, de Lima Alves, F, Ogawa, H., Alves, F.L., Green, L.C., Vagnarelli, P, Kumiko Samejima, Ohta, S, Alastair Kerr, Christine J. Farr, Shinya Ohta, William C. Earnshaw, Vargiu, G, Ohta, S., Farr, C.J., Paola Vagnarelli, Juri Rappsilber, Rappsilber, J., Samejima, I, Kelly, DA, Rappsilber, J, Samejima, K, Earnshaw, WC   +45 more
core   +1 more source