Results 121 to 130 of about 42,013 (168)
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Nature, 1992
Called the "mystery of mysteries" by Darwin, speciation is still a little-understood area of evolution. Genetic analysis, however, has yielded new generalizations about speciation and suggests promising avenues of research.
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Called the "mystery of mysteries" by Darwin, speciation is still a little-understood area of evolution. Genetic analysis, however, has yielded new generalizations about speciation and suggests promising avenues of research.
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Epigenetic Inheritance, Genetic Assimilation and Speciation
Journal of Theoretical Biology, 1999Epigenetic inheritance systems enable the environmentally induced phenotypes to be transmitted between generations. Jablonka and Lamb (1991, 1995) proposed that these systems have a substantial role during speciation. They argued that divergence of isolated populations may be first triggered by the accumulation of (heritable) phenotypic differences ...
C, Pál, I, Miklós
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Biochemical Population Genetics and Speciation
Evolution, 1982Although the currently most popular concept of species and speciation is described as a "synthetic" or "biological" one, it is a population-genetic concept in its essence, since it was in its terms that the synthesis of Darwinian natural selection and Mendelian genetics was realized (Chetverikov, 1926; Fisher, 1930; Haldane, 1932; Dobzhansky, 1937 ...
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The Ecological Genetics of Speciation
The American Naturalist, 2002Ecological interactions and the natural selection they cause play a prominent causal role in biological diversification and speciation. As a discipline, ecological genetics integrates the two components of adaptive evolution (natural selection and genetic variability) to study the mechanisms of evolution.
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Genetic algorithm with geographic speciation
2012 8th International Conference on Natural Computation, 2012Genetic algorithm (GA) is a bionic algorithm which is widely used for optimization problems. It was initially coined by professor Holland in University of Michigan who took advantage of some phenomenon in natural evolution, such as crossover, mutation, selection and inheritance. However, there is a longstanding problem of genetic algorithm.
Wang Li, Bi Li, null Qiansheng Zhang
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Genetics and genomics of speciation
2019The diversity of life on Earth is something that has long fascinated biologists. When we inspect all this variation, two striking patterns emerge. First, organisms appear as if they have almost been “designed” to live the way they do. However, as explained in chapters 4 and 5, the theory of natural selection accounts for this apparent design.
Glenn-Peter Sætre, Mark Ravinet
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Genetic speciation in the grasshopper Eyprepocnemis plorans
Chromosoma, 19651. Eyprepocnemis plorans meridionalis and E. p. ornatipes have a standard acridoid complement of 2n=22+XO acrocentric chromosomes in the male. Meiosis in them is normal and the former has a higher chiasma frequency (mean Xta per cell 13.95 v. 13.33). 2.
B, JOHN, K R, LEWIS
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Speciation in parasites: a population genetics approach
Trends in Parasitology, 2005Parasite speciation and host-parasite coevolution should be studied at both macroevolutionary and microevolutionary levels. Studies on a macroevolutionary scale provide an essential framework for understanding the origins of parasite lineages and the patterns of diversification.
Tine, Huyse +2 more
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Speciation: The Genetic Transition
2000Abstract The genetic changes leading to the formation of new species are poorly under stood and are the subject of considerable debate. Some evolutionists propose that major gene changes may propel populations into different reproductive or ecological realms and thereby promote speciation (Gottlieb, 1984).
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Speciation genetics: Limits and promises
TAXON, 2010AbstractMany central questions on speciation genetics such as the nature of genetic changes involved and the role of selection in speciation have been under prolonged and intense debate. The development of massively parallel sequencing and increased cooperation among ecological, population and molecular geneticists, offer the promise to find answers to
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