Results 21 to 30 of about 46,136 (329)

Recombining your way out of trouble: the genetic architecture of hybrid fitness under environmental stress [PDF]

, 2020
Hybridization between species is a fundamental evolutionary force that can both promote and delay adaptation. There is a deficit in our understanding of the genetic basis of hybrid fitness, especially in non-domesticated organisms.
Bendixsen, D., Greig, D., Janzen, T., Nolte, A., Stelkens, R., Zhang, Z.   +5 more
core   +1 more source

DIPLOID VERSUS HAPLOID ORGANISMS [PDF]

International Journal of Modern Physics C, 2001
Using a bit string model, we show that asexual reproduction for diploids is more efficient than for haploids: it improves genetic material producing new individuals with less deleterious mutations. We also see that in a system where competition is present, diploids dominate, even though we consider some dominant loci.
Ticona, Armando, de Oliveira, Paulo Murilo C.   +1 more
openaire   +2 more sources

FISH-aimed karyotype analysis in Aconitum subgen : aconitum reveals excessive rDNA sites in tetraploid taxa [PDF]

, 2018
The location of 5S and 35S rDNA sequences in chromosomes of four Aconitum subsp. Aconitum species was analyzed after fluorescence in situ hybridization (FISH). Both in diploids (2n = 2x = 16; Aconitum variegatum, A. degenii) and tetraploids (2n = 4× = 32;
Grabowska-Joachimiak, Aleksandra, Hasterok, Robert, Joachimiak, Andrzej, Musiał, Krystyna, Sliwinska, Elwira   +4 more
core   +2 more sources

Smc5/6 coordinates formation and resolution of joint molecules with chromosome morphology to ensure meiotic divisions [PDF]

, 2013
During meiosis, Structural Maintenance of Chromosome (SMC) complexes underpin two fundamental features of meiosis: homologous recombination and chromosome segregation.
A Chavez, A De Muyt, A Hochwagen, A Hochwagen, A Irmisch, A McAleenan, A Schwacha, A Sourirajan, A Svetlanov, AC Chan, AJ Wood, AL Marston, Alex D. Herbert, Alice Copsey, Andreas Hochwagen, Andrew Chi-ho Chan, B Rockmill, BH Lee, C Buhler, C Tapia-Alveal, DM Sheedy, E Ampatzidou, EA Andrews, EA Outwin, ER Hoffmann, Eva Hoffmann, F Osman, FZ Watts, G De Piccoli, G Vader, GA Cromie, GR Smith, GV Borner, H Murakami, Hannah G. Blitzblau, HB Lindroos, HG Blitzblau, HG Blitzblau, HG Yu, HG Yu, I Lilienthal, J Gregan, J Matos, J Matos, J Palecek, J Pan, J Torres-Rosell, J Zalevsky, JA Carballo, JA Downs, JK Holloway, JM Murray, JR Mullen, JR Mullen, JS Bickel, K Nishimura, K Zakharyevich, K Zakharyevich, KA Henderson, KP Kim, KP Kohl, KT Nishant, L Jessop, L Jessop, L Newnham, L Wu, L Xu, LE Berchowitz, LE Hang, LJ Gaskell, Louise Newnham, M Bermudez-Lopez, M Xaver, MA Roy, Michael Lichten, MJ Neale, MN Boddy, MS McMahill, N Hunter, N Hunter, N Wu, Neil Hunter, NK Kolas, O Yildiz, P Jordan, Philip W. Jordan, PR Potts, PR Potts, Prakash Arumugam, RK Clyne, S Agarwal, S Chu, S Farmer, S Gray, S Panizza, S Pebernard, S Wehrkamp-Richter, SB Buonomo, SD Oh, SD Oh, Shangming Tang, SL Andersen, Sonya Newcombe, Stephen Gray, T de los Santos, T Snowden, T Wechsler, TM Carlile, TS Kitajima, V Kaliraman, WM Fricke, X Zhao, Y Blat, YH Chen, YH Chen, Zhaobo Li   +115 more
core   +8 more sources

Variation in Ribosomal DNA in the Genus Trifolium (Fabaceae)

Plants, 2021
The genus Trifolium L. is characterized by basic chromosome numbers 8, 7, 6, and 5. We conducted a genus-wide study of ribosomal DNA (rDNA) structure variability in diploids and polyploids to gain insight into evolutionary history. We used fluorescent in
Radka Vozárová, Eliška Macková, David Vlk, Jana Řepková   +3 more
doaj   +1 more source

Pollen Development and Viability in Diploid and Doubled Diploid Citrus Species

Frontiers in Plant Science, 2022
Seedlessness is one of the most important agronomic traits in mandarins on the fresh fruit market. Creation of triploid plants is an important breeding strategy for development of new commercial varieties of seedless citrus. To this end, one strategy is to perform sexual hybridizations, with tetraploid genotypes as male parents.
Lora, Jorge, García-Lor, Andrés, Aleza, Pablo   +2 more
openaire   +4 more sources

Biosystematic studies on Dactylis L. l. Review of the previous studies. 1.2. Cytology, genetics, experimental studies, and evolution

Acta Societatis Botanicorum Poloniae, 2014
In this paper the author presents a review of the previous studies on Dactylis L., dealing with cytology,genetics, experimental studies and evolution. Following cytotypes of Dactylis are distributed mostly in Central Europe: 16 diploids, 7 tetraploids ...
Marta Mizianty
doaj   +1 more source

Uniparentality: advantages for range expansion in diploid and diploid-autopolyploid species

Botanical Journal of the Linnean Society, 2022
AbstractUniparental reproduction, the capacity of an individual to produce offspring autonomously, is expected to facilitate range expansion of populations. Paspalum spp. reproduce uniparentally by sexual (self-fertility) and asexual (apomixis) reproduction and biparentally by sexual (self-sterility) reproduction.
A Verena Reutemann, Eric J Martínez, Mara Schedler, Julio R Daviña, Diego H Hojsgaard, Ana I Honfi   +5 more
openaire   +3 more sources

Strategies for the evolution of sex [PDF]

, 2001
We find that the hypothesis made by Jan, Stauffer and Moseley [Theory in Biosc., 119, 166 (2000)] for the evolution of sex, namely a strategy devised to escape extinction due to too many deleterious mutations, is sufficient but not necessary for the ...
A. Bernardes, A. Kondrashov, A. Pekalski, Ayşe Erzan, B. Chopard, B. Drossel, B. Örcal, C. Chisholm, D. Stauffer, D. Stauffer, E.J. Lyons, E.P. Solomon, Erkan Tüzel, H.L. Muller, J. Maynard Smith, J. Maynard Smith, J. Maynard Smith, J. Thoms, J.M. Smith, J.S. SaMartins, L.M. Prescott, M. Eigen, N. Jan, R.J. Redfield, S.S. Mader, T.J. Penna, Volkan Sevim, W.D. Hamilton, Y. Cui   +28 more
core   +2 more sources

Conditions in home and transplant soils have differential effects on the performance of diploid and allotetraploid anthericum species. [PDF]

PLoS ONE, 2015
Due to increased levels of heterozygosity, polyploids are expected to have a greater ability to adapt to different environments than their diploid ancestors.
Lucie Černá, Zuzana Münzbergová
doaj   +1 more source