Results 261 to 270 of about 2,157,533 (280)

Population genetics and natural selection

Genetica, 1957
Genotypic differences are the raw material on which selection acts but not all kinds of genotypic differences are of equal importance in this connection. FISHER (1930) showed that whether or not mating occurs at random, the population genotypic variance for any quantitative character may be analyzed into a number of components and that one of these ...
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A genetic algorithm with disruptive selection

IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 1996
Genetic algorithms are a class of adaptive search techniques based on the principles of population genetics. The metaphor underlying genetic algorithms is that of natural evolution. Applying the "survival-of-the-fittest" principle, traditional genetic algorithms allocate more trials to above-average schemata.
T, Kuo, S Y, Hwang
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Genetic engineering: Unnatural selection

Nature, 2003
Evolving techniques for redesigning organisms have enormous potential but they must be matched with equally sophisticated methods for evaluating their benefits and risks.
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Genetic Algorithm Guided Selection:  Variable Selection and Subset Selection

Journal of Chemical Information and Computer Sciences, 2002
A novel Genetic Algorithm guided Selection method, GAS, has been described. The method utilizes a simple encoding scheme which can represent both compounds and variables used to construct a QSAR/QSPR model. A genetic algorithm is then utilized to simultaneously optimize the encoded variables that include both descriptors and compound subsets.
Sung Jin, Cho, Mark A, Hermsmeier
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Genetic prediction and adverse selection

AbstractThe predictive power of genetic data has increased dramatically and is reaching levels of clinical utility for many diseases. Meanwhile, many countries have banned insurers from utilizing genetic information, despite concerns about adverse selection. We make three contributions.
Eduardo Azevedo, Jonathan Beauchamp, Richard Karlsson Linnér   +2 more
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Genetic selection in farmed deer

Veterinary Record, 1991
Selection is the major tool used by breeders to improve the genetic quality of their livestock. Traditional methods of selection are well proven and useful in improving the economic merit of livestock. The performance of an animal is affected by its genetic quality and by the environment in which it is reared.
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Selected features of marsupial genetics

Genetica, 1993
As a consequence of the ancient separation of the marsupial and eutherian lineages, comparative genetical studies of these two mammalian taxa can be particularly informative. The potential for marsupial genetical research has been enhanced by the development of laboratory colonies of three 'model' species--Macropus eugenii, Monodelphis domestica and ...
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Genetics of Sexual Selection

2006
Abstract Sexual selection was defined by Darwin (1871) as selection that “depends on the advantage that certain individuals have over other individuals of the same sex and species, in exclusive relation to reproduction.” Sexual selection was developed separately from natural selection because Darwin wished to explain the evolution of ...
Allen J Moore, Patricia J Moore
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Reproductive or Genetic Selection

Science, 1899
Karl Pearson, Alice Lee, Leslie Bramley-Moore   +2 more
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Genetics and the understanding of selection

Nature Reviews Genetics, 2009
At first sight selection is a simple notion, and some consider it the most important evolutionary force. But how important is selection, is it really so trivial to understand and what are the alternatives? Here I discuss how genetics is crucial for addressing all of these questions: genetics allowed the concept of natural selection to become viable, it
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