Results 241 to 250 of about 10,127 (260)
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Technology, Adaptation, and Evolution
Bulletin of the Atomic Scientists, 1969It is sometimes said that to end war, so deeply rooted in our biological aggressions, is contrary to human-nature. But flexibility of behavior and reason are man's outstanding traits, and love and cooperation are also deeply rooted biologically. It was thought by the best minds of the times that acts of depravity-slavery, human sacrifice, cannibalism ...
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Adaptive Evolution and Epigenetics
2017Evolution by natural selection requires that differences among individuals are heritable to some degree. However, evolutionary theory is not dependent on a particular mechanism of inheritance. Epigenetic changes, such as DNA methylation and particular histone modifications, can be inherited but their properties can differ from ordinary genetic ...
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2003
Adaptive evolution—phenotypic improvement due to selection—is the central theme of Darwinian evolutionary biology. The concept of adaptive evolution by selection on heritable variation underlies every evolutionary analysis of form, function, and fitness.
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Adaptive evolution—phenotypic improvement due to selection—is the central theme of Darwinian evolutionary biology. The concept of adaptive evolution by selection on heritable variation underlies every evolutionary analysis of form, function, and fitness.
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Spiroplasmas: evolution, adaptation and diversity
Frontiers in Bioscience, 2002Since its designation as a separate genus some 30 years ago, Spiroplasmas have been well documented in a wide range of hosts and as the causative agent of several plant and insect diseases. One major area of research is the continued identification and taxonomical characterization of new Spiroplasma sp.
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2020
How do species adapt to their environments? Darwin argued that species became increasingly adapted to their environments as variants (or what we would now call genetic mutants) that exhibited a slightly better fit to their environment survived better and were able to reproduce more successfully....
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How do species adapt to their environments? Darwin argued that species became increasingly adapted to their environments as variants (or what we would now call genetic mutants) that exhibited a slightly better fit to their environment survived better and were able to reproduce more successfully....
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1984
It seems important in any introduction to ecology to stress the relationship between ecological study and evolutionary theory. Ecology is the study of the interaction of organisms with their environment. That interaction, and the adaptiveness of the organisms to their biotic and abiotic surroundings, are, respectively, the driving force for and the ...
R. J. Putman, S. D. Wratten
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It seems important in any introduction to ecology to stress the relationship between ecological study and evolutionary theory. Ecology is the study of the interaction of organisms with their environment. That interaction, and the adaptiveness of the organisms to their biotic and abiotic surroundings, are, respectively, the driving force for and the ...
R. J. Putman, S. D. Wratten
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Nature Genetics, 2002
Using comparative sequence analyses, we can identify proteins that may have been subject to positive darwinian selection. To test these statistical results, it is important to develop functional assays and identify amino-acid changes that are responsible for the adaptation of organisms to specific environments.
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Using comparative sequence analyses, we can identify proteins that may have been subject to positive darwinian selection. To test these statistical results, it is important to develop functional assays and identify amino-acid changes that are responsible for the adaptation of organisms to specific environments.
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2015
We now can observe evolution in laboratory experiments, define its dynamics, and determine the genetic changes underlying new phenotypes. What happens in such experiments may not be directly applicable to evolution in natural habitats, however, unless particular habitats can be accurately reproduced in the laboratory.
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We now can observe evolution in laboratory experiments, define its dynamics, and determine the genetic changes underlying new phenotypes. What happens in such experiments may not be directly applicable to evolution in natural habitats, however, unless particular habitats can be accurately reproduced in the laboratory.
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