Results 81 to 90 of about 128,214 (287)

Ecological speciation in the tropics: Insights from comparative genetic studies in Amazonia

Frontiers in Genetics, 2015
Evolution creates and sustains biodiversity via adaptive changes in ecologically relevant traits. Ecologically mediated selection contributes to genetic divergence both in the presence or absence of geographic isolation between populations, and is ...
Luciano B Beheregaray, Georgina eCooke, Ning eChao, Ning eChao, Erin L Landguth   +4 more
doaj   +1 more source

Pulsed Electrolysis Prevents Sulfur Poisoning for Sustained Sulfide Valorization

Advanced Materials, EarlyView.
Integrating pulsed electrolysis with Sc‐doped NiFe‐LDH enables sustainable sulfide valorization, achieving >500 h stability, 99.8% efficiency. Moreover, this technology produces high‐purity sulfur and sodium formate, boosting profit by 121% to $1,294.7 per tonne of hydrogen.
Zhiyan Hou, Yangbo Ma, Yufeng Wu, Weijin Cao, Zhengxiao Guo, Changlong Wang   +5 more
wiley   +1 more source

THE GENETICS OF SPECIATION IN THE RODENT GENUSPEROMYSCUS [PDF]

Evolution, 1978
A basic tenet of evolutionary theory is that race formation and speciation occur by the conversion of genetic variation within populations to variation among populations (Lewontin, 1967). Mayr (1963) and Dobzhansky (1959) have argued that a major "genetic revolution" accompanies the formation of species, and Haldane (1957) states, "Good species, even ...
Earl G, Zimmerman, C William, Kilpatrick, B J, Hart   +2 more
openaire   +2 more sources

Paving the Way to Elucidate Hg's Role in Tumorigenesis

Advanced Science, EarlyView.
Tumorigenesis can result from diverse environmental carcinogens. Among them, mercury—a lifelong bioaccumulative Group 2B carcinogen—has tumorigenic potential that remains poorly understood due to confounding co‐exposures and limited organ‐specific data.
Shouying Li, Rong Zhong, Zhenyang Yu, Hualing Fu, Jin Chen, Jia Wei, Ningwei Zhao, Le Qu, Tiantian Li, Wenli Tang, Huan Zhong   +10 more
wiley   +1 more source

Speciation Genetics: Reinforcement by Shades and Hues [PDF]

Current Biology, 2012
Mating with a member of another species can seriously reduce an organism's fitness, so mechanisms ought to evolve to prevent it where hybridizing species meet. This old idea of 'reinforcement' has found new support in an elegant pair of studies of the ecological genetics of flower colour in an annual herb.
openaire   +2 more sources

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

A Genome-wide hybrid incompatibility landscape between Caenorhabditis briggsae and C. nigoni. [PDF]

PLoS Genetics, 2015
Systematic characterization of ẖybrid incompatibility (HI) between related species remains the key to understanding speciation. The genetic basis of HI has been intensively studied in Drosophila species, but remains largely unknown in other species ...
Yu Bi, Xiaoliang Ren, Cheung Yan, Jiaofang Shao, Dongying Xie, Zhongying Zhao   +5 more
doaj   +1 more source

Speciation Genetics: Search for the Missing Snowball [PDF]

Current Biology, 2010
Theory predicts that, as species diverge from one another, the number of genetic incompatibilities causing sterility or inviability in interspecies hybrids grows faster than linearly, or snowballs. Two new genetic analyses now provide the first empirical support for this snowball effect.
openaire   +2 more sources

3D Chromatin Architecture Provides Insights Into Leaf Trait Variation Among Pear Species

Advanced Science, EarlyView.
ABSTRACT Three‐dimensional (3D) chromatin architecture plays a fundamental role in eukaryotic gene regulations, its functional significance in perennial fruit trees remains poorly characterized despite extensive applications in crop genomics. Here, we developed high‐resolution (∼5 kb) Hi‐C maps of Pyrus and compared 3D genomic architecture of three ...
Yueyuan Liu, Chenhui Han, Cheng Xue, Manyi Sun, Bobo Song, Yongsong Xue, Guangyan Yang, Shaozhuo Xu, Wei Wei, Jiaming Li, Runze Wang, Jun Wu   +11 more
wiley   +1 more source

Reproductive isolation arises during laboratory adaptation to a novel hot environment

Genome Biology
Background Reproductive isolation can result from adaptive processes (e.g., ecological speciation and mutation-order speciation) or stochastic processes such as “system drift” model.
Sheng-Kai Hsu, Wei-Yun Lai, Johannes Novak, Felix Lehner, Ana Marija Jakšić, Elisabetta Versace, Christian Schlötterer   +6 more
doaj   +1 more source