Results 21 to 30 of about 2,363,558 (309)
Estimating the complex relationship between fitness and genotype or phenotype (i.e. the adaptive landscape) is one of the central goals of evolutionary biology.
Austin H Patton +4 more
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The Cambrian Explosion: macroevolution and biomineralization
Recent advances in our understanding of the Cambrian evolutionary diversification event (Cambrian Explosion) show that, although eumetazoan stem taxa were present in the late Proterozoic, a tremendous burst of macroevolutionary change occurred near the ...
Mark A. S. McMenamin
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Niche Occupation Limits Adaptive Radiation in Experimental Microcosms [PDF]
Adaptive radiations have played a key role in the evolution of biological diversity. The breadth of adaptive radiation in an invading lineage is likely to be influenced by the availability of ecological niches, which will be determined to some extent by ...
Colegrave, Nick +12 more
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Evolutionary Significance of Equinae From the Mexican Neogene
North American Equinae integrates a monophyletic clade that consists of about 20 genera and 80 species. This group includes horses with hypsodont cheek teeth belonging to the merychippines and the tribes Hipparionini, Protohippini, and Equini.
Victor Manuel Bravo-Cuevas +1 more
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Biological populations may survive lethal environmental stress through evolutionary rescue. The rescued populations typically suffer a reduction in growth performance and harbor very low genetic diversity compared with their parental populations.
Dong‐Hao Zhou, Quan‐Guo Zhang
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Adaptive mesh refinement computation of acoustic radiation from an engine intake [PDF]
A block-structured adaptive mesh refinement (AMR) method was applied to the computational problem of acoustic radiation from an aeroengine intake. The aim is to improve the computational and storage efficiency in aeroengine noise prediction through ...
Zhang, Xin +5 more
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Deep-Time Demographic Inference Suggests Ecological Release as Driver of Neoavian Adaptive Radiation
Assessing the applicability of theory to major adaptive radiations in deep time represents an extremely difficult problem in evolutionary biology.
Peter Houde +2 more
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Convergence and plasticity in the adaptive radiation of cichlid fishes [PDF]
Ever since Charles Darwin and Alfred Wallace (1858) propelled our understanding about the importance of natural selection in the transformation of species, researchers endeavoured to use this intellectual foundation to explain larger patterns of ...
Muschick, Moritz
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Dendrite fragmentation induced by massive-like δ–γ transformation in Fe–C alloys
Transitioning from columnar to equiaxed grains is paramount for desired microstructures during steel casting. Here, the authors report a new fragmentation mechanism based on a phase transition at grain boundaries that can contribute to equiaxed grains.
Hideyuki Yasuda +7 more
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The Role of Photobionts as Drivers of Diversification in an Island Radiation of Lichen-Forming Fungi
Speciation in oceanic islands has attracted the interest of scientists since the 19th century. One of the most striking evolutionary phenomena that can be studied in islands is adaptive radiation, that is, when a lineage gives rise to different species ...
Miguel Blázquez +8 more
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