Results 21 to 30 of about 11,571 (204)

Novel Chromosome Organization Pattern in Actinomycetales—Overlapping Replication Cycles Combined with Diploidy

mBio, 2017
Bacteria regulate chromosome replication and segregation tightly with cell division to ensure faithful segregation of DNA to daughter generations. The underlying mechanisms have been addressed in several model species.
Kati Böhm, Fabian Meyer, Agata Rhomberg, Jörn Kalinowski, Catriona Donovan, Marc Bramkamp   +5 more
doaj   +1 more source

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

Karyological analysis of the five native Macaronesian Festuca (Gramineae) grasses supports a distinct diploid origin of two schizoendemic groups

Anales del Jardín Botánico de Madrid, 2009
A karyological analysis has been conducted of all five native Macaronesian Festuca grasses belonging to fine-leaved F. subg. Festuca sect. Aulaxyper and broad-leaved F. subg. Drymanthele sect. Phaeochloa Loliinae lineages.
Miguel Menezes de Sequeira, Antonio Díaz-Pérez, Arnoldo Santos-Guerra, Juan Viruel, Pilar Catalán   +4 more
doaj   +1 more source

Population-based incremental learning with memory scheme for changing environments [PDF]

, 2005
Copyright @ 2005 ACMIn recent years there has been a growing interest in studying evolutionary algorithms for dynamic optimization problems due to its importance in real world applications.
Yang, S
core   +1 more source

Evolutionary algorithms for dynamic optimization problems: workshop preface [PDF]

, 2005
Copyright @ 2005 ...
Branke, J, Yang, S
core   +1 more source

Cryptic fitness advantage: diploids invade haploid populations despite lacking any apparent advantage as measured by standard fitness assays. [PDF]

PLoS ONE, 2011
Ploidy varies tremendously within and between species, yet the factors that influence when or why ploidy variants are adaptive remains poorly understood.
Aleeza C Gerstein, Sarah P Otto
doaj   +1 more source

Dominance learning in diploid genetic algorithms for dynamic optimization problems [PDF]

, 2006
Copyright @ 2006 YangThis paper proposes an adaptive dominance mechanism for diploidy genetic algorithms in dynamic environments. In this scheme, the genotype to phenotype mapping in each gene locus is controlled by a dominance probability, which is ...
Yang, S
core   +1 more source

Onset of quiescence following p53 mediated down-regulation of H2AX in normal cells.

PLoS ONE, 2011
Normal cells, both in vivo and in vitro, become quiescent after serial cell proliferation. During this process, cells can develop immortality with genomic instability, although the mechanisms by which this is regulated are unclear.
Yuko Atsumi, Hiroaki Fujimori, Hirokazu Fukuda, Aki Inase, Keitaro Shinohe, Yoshiko Yoshioka, Mima Shikanai, Yosuke Ichijima, Junya Unno, Shuki Mizutani, Naoto Tsuchiya, Yoshitaka Hippo, Hitoshi Nakagama, Mitsuko Masutani, Hirobumi Teraoka, Ken-ichi Yoshioka   +15 more
doaj   +1 more source

Polyploidy in tissues of plants in vitro of grape somaclones

BIO Web of Conferences, 2021
In vitro experimental plants obtained by clonal micropropagation of 9 grape somaclones of 5 original forms were the material for cytogenetic research. A biological microscope XSP-146TP was used for cytogenetic analysis.
Klimenko Viktor, Lushchay Ekaterina, Zlenko Valeryi   +2 more
doaj   +1 more source

Comparative analysis of the complete chloroplast genome between tetraploidy and diploidy of Cyclocarya paliurus (Batal.) Iljinskaja

Mitochondrial DNA. Part B. Resources, 2021
Cyclocarya paliurus (Batal.) Iljinskaja, a monotypic species in Cyclocarya of Juglandaceae, is regarded as one of important medical plants in China.
Yinquan Qu, Qian Wang, Yanhao Yu, Xiangxiang Fu   +3 more
doaj   +1 more source