Results 71 to 80 of about 1,684 (175)

Friends without benefits: Extensive cytotype sympatry and polyploid persistence in an African geophyte

American Journal of Botany, Volume 111, Issue 8, August 2024.
Abstract Premise Polyploidy is a major factor in plant adaptation and speciation. Multiple mechanisms contribute to autopolyploid frequency within populations, but uncertainties remain regarding mechanisms that facilitate polyploid establishment and persistence.
Damian Vaz de Sousa, Michelle Greve, Kenneth C. Oberlander   +2 more
wiley   +1 more source

Artificial induction of tetraploidy in Humulus lupulus L. using oryzalin

Acta Agrobotanica, 2019
The aim of the research was to establish an efficient procedure for in vitro micropropagation in order to obtain numbers of identical plants for in vitro polyploidization of Humulus lupulus (2n = 20), using antimicrotubule agent oryzalin.
Michaela Švécarová, Božena Navrátilová, Petr Hašler, Vladan Ondřej   +3 more
doaj   +1 more source

FIGURE 1 in A new Roncus species (Pseudoscorpiones: Neobisiidae) from Montseny Natural Park (Catalonia, Spain), with remarks on karyology

, 2008
FIGURE 1. Maps showing location of the locus typicus (red star) of Roncus montsenyensis sp. nov., with a photograph of the beech forest where samples were collected.Published as part of Zaragoza, Juan A.
Zaragoza, Juan A., Áhlavský, Franti Š Ek Š Ť   +1 more
core   +1 more source

Evidence for feminized genetic males in a flea beetle using newly identified X‐linked markers

Ecology and Evolution, Volume 14, Issue 8, August 2024.
This study investigates the highly female‐biased sex ratio in the flea beetle Altica lythri, examining potential mechanisms such as Wolbachia‐induced feminization of genetic males. Through transcriptomic analysis and the establishment of genotypic sex differentiation markers using the SEX‐DETector approach, we provide evidence that feminization of ...
Kim Rohlfing, Malte Grewoldt, Mathilde Cordellier, Susanne Dobler   +3 more
wiley   +1 more source

Investigation of marmoset hybrids (Cebuella pygmaea x Callithrix jacchus) and related Callitrichinae (Platyrrhini) by cross-species chromosome painting and comparative genomic hybridization [PDF]

, 2005
We report on the cytogenetics of twin offspring from an interspecies cross in marmosets (Callitrichinae, Platyrrhini), resulting from a pairing between a female Common marmoset (Callithrix jacchus, 2n = 46) and a male Pygmy marmoset (Cebuella pygmaea, 2n
Müller, Stefan, Münch, M., Neusser, M., Anzenberger, G.   +3 more
core   +1 more source

The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology

, 2019
Stocchino, Giacinta Angela, Sluys, Ronald, Harrath, Abdel Halim, Mansour, Lamjed, Manconi, Renata (2019): The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its ...
Mansour, Lamjed, Harrath, Abdel Halim, Manconi, Renata, Stocchino, Giacinta Angela, Sluys, Ronald   +4 more
core   +1 more source

FIGURES 14–17 in A new Roncus species (Pseudoscorpiones: Neobisiidae) from Montseny Natural Park (Catalonia, Spain), with remarks on karyology

, 2008
FIGURES 14–17. Roncus montsenyensis sp. nov., male paratype. SEM photographs. 14. right palp, dorsal view; 15. fingers of the right chela, partial dorsal view; 16. left chela, lateral-external view; 17.
Zaragoza, Juan A., Áhlavský, Franti Š Ek Š Ť   +1 more
core   +1 more source

Regional regulation of transcription in the chicken genome [PDF]

, 2010
Background Over the past years, the relationship between gene transcription and chromosomal location has been studied in a number of different vertebrate genomes. Regional differences in gene expression have been found in several different species.
Bastiaansen John WM, Nie, H., Nie Haisheng, Crooijmans, R.P.M.A., Groenen, M.A.M., Groenen Martien AM, Bastiaansen, J.W.M., Crooijmans Richard PMA, Megens, H.J.W.C., Megens Hendrik-Jan   +9 more
core   +1 more source

Stretching the Rules: Monocentric Chromosomes with Multiple Centromere Domains [PDF]

, 2012
The centromere is a functional chromosome domain that is essential for faithful chromosome segregation during cell division and that can be reliably identified by the presence of the centromere-specific histone H3 variant CenH3.
Elizabeth Schroeder-Reiter, Schroeder-Reiter, Elizabeth, Chocholova, Eva, Neumann Pavel, Novák Petr, Petr Novák (2448673), Navrátilová Alice, Wanner, Gerhard, Macas Jiří, Gerhard Wanner (40161), Petr Novák, Koblížková Andrea, Jiří Macas (84231), Pavel Neumann, Steinbauerova, Veronika, Navratilova, Alice, Elizabeth Schroeder-Reiter (156901), Andrea Koblížková, Eva Chocholová (156910), Veronika Steinbauerová, Alice Navrátilová (84233), Macas, Jiri, Pavel Neumann (84232), Andrea Koblížková (156904), Neumann, Pavel, Koblizkova, Andrea, Eva Chocholová, Schroeder-Reiter Elizabeth, Wanner Gerhard, Jiří Macas, Veronika Steinbauerová (156907), Novak, Petr, Alice Navrátilová, Gerhard Wanner, Steinbauerová Veronika, Chocholová Eva   +35 more
core   +2 more sources

Karyology and Sex in Clematis Ligusticifolia Nutt. (Ranunculaceae)

, 1973
An investigation was conducted to determine the relationship between sex and karyology in Clematis ligusticifolia Nutt. (Ranunculaceae), a dioecious perennial.
White, Darrel A.
core