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Journal of Genetics, 1957
Unless selection is very intense, the number of deaths needed to secure the substitution, by natural selection, of one gene for another at a locus, is independent of the intensity of selection. It is often about 30 times the number of organisms in a generation. It is suggested that, in horotelic evolution, the mean time taken for each gene substitution
Haldane, John Burdon Sanderson
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Unless selection is very intense, the number of deaths needed to secure the substitution, by natural selection, of one gene for another at a locus, is independent of the intensity of selection. It is often about 30 times the number of organisms in a generation. It is suggested that, in horotelic evolution, the mean time taken for each gene substitution
Haldane, John Burdon Sanderson
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Natural selection then and now
Biological Reviews, 2010One often reads the following claims: (1) The modern conception of natural selection differs from Darwin's own conception only with respect to incidental features; (2) Natural selection is a very simple idea with enormous explanatory power. Both claims are problematic. R.A.
Tim Lewens
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Does Natural Selection Select for Natural Selection?
2021Humanity’s colossal ecological crisis is an explicit function of our architectural and socially enforced spaces of occupancy, plots of arrogation, the places in which we choose to live, altering our surroundings, inventing and constructing “our” possessions.
Michael Charles Tobias +1 more
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Natural language and natural selection
Behavioral and Brain Sciences, 1990AbstractMany people have argued that the evolution of the human language faculty cannot be explained by Darwinian natural selection. Chomsky and Gould have suggested that language may have evolved as the by-product of selection for other abilities or as a consequence of as-yet unknown laws of growth and form.
Steven Pinker, Paul Bloom
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International Journal of Science Education, 2006
Although many research studies report students’ Lamarckian misconceptions, only a few studies present learning and teaching strategies that focus on the successful development of the concept of natural selection. The learning and teaching strategy for upper secondary students (aged 15–16) presented in this study conducted in The Netherlands is based on
Geraedts, C.L, Boersma, K.T.
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Although many research studies report students’ Lamarckian misconceptions, only a few studies present learning and teaching strategies that focus on the successful development of the concept of natural selection. The learning and teaching strategy for upper secondary students (aged 15–16) presented in this study conducted in The Netherlands is based on
Geraedts, C.L, Boersma, K.T.
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Natural Selection on an Isoallele
Nature, 1963IN Drosophila pseudoobscura a genetic factor has previously been described1, the only observable effect of which is to cause a small change in the banding pattern of the third polytene chromosome. This factor behaves in crosses as a simple recessive gene, and has been named ‘salivary’ (sal).
L, VANVALEN, L, LEVINE
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The American Naturalist, 2003
The study of natural selection in laboratory systems undergoing experimental evolution can provide important insights into the relationship between natural selection and adaptation. We studied selection on the norm of reaction of age at first reproduction in a laboratory population of Drosophila melanogaster.
David, Houle, Locke, Rowe
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The study of natural selection in laboratory systems undergoing experimental evolution can provide important insights into the relationship between natural selection and adaptation. We studied selection on the norm of reaction of age at first reproduction in a laboratory population of Drosophila melanogaster.
David, Houle, Locke, Rowe
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2008
Natural Selection—its power compared with man’s selection—its power on characters of trifling importance—its power at all ages and on both sexes—Sexual Selection—On the generality of intercrosses between individuals of the same species—Circumstances favourable and unfavourable to Natural Selection, namely, intercrossing, isolation, number of ...
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Natural Selection—its power compared with man’s selection—its power on characters of trifling importance—its power at all ages and on both sexes—Sexual Selection—On the generality of intercrosses between individuals of the same species—Circumstances favourable and unfavourable to Natural Selection, namely, intercrossing, isolation, number of ...
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Measurement of Natural Selection in Natural Populations
Nature, 1964VAN VALEN1 has proposed a measure of natural selection intensity as an extension of Haldane's2 measure of intensity I and applied this to data on fossil horses. Van Valen's measure, at least in the example given, is actually a special case of Haldane's I.
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