Results 31 to 40 of about 1,662,601 (323)

Exact phase diagram of quasispecies model with mutation rate modifier [PDF]

Phys. Rev. Lett. 102, 038101 (2009), 2008
We consider an infinite asexual population with a mutator allele which can elevate mutation rates. With probability $f$, a transition from nonmutator to mutator state occurs but the reverse transition is forbidden. We find that at $f=0$, the population is in the state with minimum mutation rate and at $f=f_c$, a phase transition occurs between a mixed ...
arxiv   +1 more source

Echec des élites et régressions économiques de Madagascar [PDF]

Mouvements et Enjeux Sociaux, 2022
Madagascar est le seul pays dans le monde où le PIB par tête n’a cessé de régresser depuis l’indépendance. Une situation qui est à la fois préoccupante et étonnante pour les chercheurs, observateurs et experts de différentes disciplines.
Jean Angelson RANDRIAMBOAVONJY
doaj  

Abstention électorale à Madagascar : entre déficit civique et défaillance de la classe politique [PDF]

Mouvements et Enjeux Sociaux, 2022
Longtemps ignorée par les chercheurs en sciences sociales, l’abstention électorale devient une des problématiques majeures de la démocratie représentative en ce moment. Tel est également le cas pour Madagascar.
Jean Angelson RANDRIAMBOAVONJY
doaj  

Gamma Rays and Sodium Azide Induced Genetic Variability in High-Yielding and Biofortified Mutant Lines in Cowpea [Vigna unguiculata (L.) Walp.]

Frontiers in Plant Science, 2022
With the twin pressures of high population growth and extreme weather events, developing countries are the worst hit in meeting the food demands of their people, with millions unable to access adequate and nutritionally balanced food.
Aamir Raina, Aamir Raina, Rafiul Amin Laskar, Mohammad Rafiq Wani, Basit Latief Jan, Sajad Ali, Samiullah Khan   +6 more
doaj   +1 more source

Synthesis and properties of a glyphosate isopropylamine salt slow-release agent via γ-ray irradiation

Fushe yanjiu yu fushe gongyi xuebao
To improve the rate of pesticide utilization, reduce pesticide usage, and effectively eliminate the adverse effects of pesticides on the environment, a carrier material was prepared by modifying starch using a one-step irradiation treatment. This carrier
LIU Lu, ZHANG Leping, XIE Hongke, WU Jing, WU Xiaofen, GUO Feng, ZHAO Caifeng, SHAO Sai   +7 more
doaj   +1 more source

A practical guide for mutational signature analysis in hematological malignancies

Nature Communications, 2019
Mutational signature analysis provides important information about the mutational processes underpinning different stages of tumorigenesis. Here, the authors compare publicly available signature extraction tools and suggest a framework for the generation
Francesco Maura, Andrea Degasperi, Ferran Nadeu, Daniel Leongamornlert, Helen Davies, Luiza Moore, Romina Royo, Bachisio Ziccheddu, Xose S. Puente, Herve Avet-Loiseau, Peter J. Campbell, Serena Nik-Zainal, Elias Campo, Nikhil Munshi, Niccolò Bolli   +14 more
doaj   +1 more source

A Cyclin Gene OsCYCB1;5 Regulates Seed Callus Induction in Rice Revealed by Genome Wide Association Study

Rice
Plant tissue culture is extensively employed in plant functional genomics research and crop genetic improvement breeding. The callus induction ability is critical for utilizing Agrobacterium-mediated genetic transformation.
Wenjing Song, Jian Zhang, Wenyu Lu, Siyi Liang, Hairong Cai, Yuanyuan Guo, Shiyi Chen, Jiafeng Wang, Tao Guo, Hong Liu, Dehua Rao   +10 more
doaj   +1 more source

Genomic landscape and chronological reconstruction of driver events in multiple myeloma

Nature Communications, 2019
Multiple myeloma evolves continuously. Here the authors chronologically reconstruct driver events in multiple myeloma, noting a limited repertoire of initiating driver events that shape the evolutionary trajectory of the disease.
Francesco Maura, Niccoló Bolli, Nicos Angelopoulos, Kevin J. Dawson, Daniel Leongamornlert, Inigo Martincorena, Thomas J. Mitchell, Anthony Fullam, Santiago Gonzalez, Raphael Szalat, Federico Abascal, Bernardo Rodriguez-Martin, Mehmet Kemal Samur, Dominik Glodzik, Marco Roncador, Mariateresa Fulciniti, Yu Tzu Tai, Stephane Minvielle, Florence Magrangeas, Philippe Moreau, Paolo Corradini, Kenneth C. Anderson, Jose M. C. Tubio, David C. Wedge, Moritz Gerstung, Hervé Avet-Loiseau, Nikhil Munshi, Peter J. Campbell   +27 more
doaj   +1 more source

MUTATIONS AND EVOLUTION. [PDF]

New Phytologist, 1920
THE article on my recent little book on “Mutations and Evolution” in NATURE of July 14, p. 636, shows such insight in the exposition of some of the views there set forth that it may seem ungrateful of me to venture to reply to anything the reviewer has written. Nevertheless, there is one important point in which I feel that my argument has been missed.
openaire   +6 more sources

Detailed kinship estimation for detecting bias among breeding families in a reintroduced population of the endangered bagrid catfish Tachysurus ichikawai

Population Ecology, EarlyView.
In the process of captive breeding and reintroduction of endangered animal species, it is crucial to minimize familial bias in reproductive success during the reintroduction phase to preserve genetic diversity. In this study, we attempted to identify the familial lineage of individuals of the endangered bagrid fish Tachysurus ichikawai born at the ...
Hinano Mizuno, Kouji Nakayama, Tetsuya Akita, Yasuyuki Hashiguchi, Tomonori Osugi, Hirohiko Takeshima   +5 more
wiley   +1 more source