Results for 'Weismann'

9 found
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  1. August Weismann on Germ-Plasm Variation.Rasmus Grønfeldt Winther - 2001 - Journal of the History of Biology 34 (3):517-555.
    August Weismann is famous for having argued against the inheritance of acquired characters. However, an analysis of his work indicates that Weismann always held that changes in external conditions, acting during development, were the necessary causes of variation in the hereditary material. For much of his career he held that acquired germ-plasm variation was inherited. An irony, which is in tension with much of the standard twentieth-century history of biology, thus exists – Weismann was not a Weismannian. (...)
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  2. Disentangling life: Darwin, selectionism, and the postgenomic return of the environment.Maurizio Meloni - 2017 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 62:10-19.
    In this paper, I analyze the disruptive impact of Darwinian selectionism for the century-long tradition in which the environment had a direct causative role in shaping an organism’s traits. In the case of humans, the surrounding environment often determined not only the physical, but also the mental and moral features of individuals and whole populations. With its apparatus of indirect effects, random variations, and a much less harmonious view of nature and adaptation, Darwinian selectionism severed the deep imbrication of organism (...)
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  3. Whatever Happened to Reversion?Charles H. Pence - 2022 - Studies in History and Philosophy of Science Part A 92 (C):97-108.
    The idea of ‘reversion’ or ‘atavism’ has a peculiar history. For many authors in the latenineteenth and early-twentieth centuries – including Darwin, Galton, Pearson, Weismann, and Spencer, among others – reversion was one of the central phenomena which a theory of heredity ought to explain. By only a few decades later, however, Fisher and others could look back upon reversion as a historical curiosity, a non-problem, or even an impediment to clear theorizing. I explore various reasons that reversion might (...)
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  4. Biology's last paradigm shift. The transition from natural theology to Darwinism.Massimo Pigliucci - 2012 - Paradigmi 2012 (3):45-58.
    The theory of evolution, which provides the conceptual framework for all modern research in organismal biology and informs research in molecular bi- ology, has gone through several stages of expansion and refinement. Darwin and Wallace (1858) of course proposed the original idea, centering on the twin concepts of natural selection and common descent. Shortly thereafter, Wallace and August Weismann worked toward the complete elimination of any Lamarckian vestiges from the theory, leaning in particular on Weismann’s (1893) concept of (...)
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  5. (1 other version)Configuration of Stable Evolutionary Strategy of Homo Sapiens and Evolutionary Risks of Technological Civilization (the Conceptual Model Essay).Valentin T. Cheshko, Lida V. Ivanitskaya & Yulia V. Kosova - 2014 - Biogeosystem Technique, 1 (1):58-68.
    Stable evolutionary strategy of Homo sapiens (SESH) is built in accordance with the modular and hierarchical principle and consists of the same type of self-replicating elements, i.e. is a system of systems. On the top level of the organization of SESH is the superposition of genetic, social, cultural and techno-rationalistic complexes. The components of this triad differ in the mechanism of cycles of generation - replication - transmission - fixing/elimination of adoptively relevant information. This mechanism is implemented either in accordance (...)
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  6. On Recognising the Paradox of Sex.Joachim Dagg - 2016 - Philosophy, Theory, and Practice in Biology 8 (20160629).
    Discussions of the implications of sexual reproduction have appeared throughout the history of evolutionary biology, from Darwin to Weismann, Fisher, Muller, Maynard Smith, and Williams. The latest of these appearances highlighted an evolutionary paradox that had previously been overlooked. In many animal and plant species reproduction is obligately sexual and also half the offspring are male, yet the males contribute nothing but genes to reproduction. If asexual mutants of such a species were to produce as many asexual offspring on (...)
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  7. Deleuze, Freud and the Three Syntheses.Henry Somers-Hall - 2017 - Deleuze and Guatarri Studies 11 (3):297-327.
    The aim of this paper is to provide a close reading of Deleuze's complex account of Freud's Beyond the Pleasure Principle in Difference and Repetition. The first part provides a reading of Beyond the Pleasure Principle itself, showing why Freud feels the need to develop a transcendental account of repetition. In the second, I show the limitations of Freud's account, drawing on the work of Weismann to argue that Freud's transcendental model mischaracterises repetition. In the third part, I show (...)
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  8. Defending the piggyback principle against Shapiro and Sober’s empirical approach.Joseph A. Baltimore - 2010 - Synthese 175 (2):151-168.
    Jaegwon Kim’s supervenience/exclusion argument attempts to show that non-reductive physicalism is incompatible with mental causation. This influential argument can be seen as relying on the following principle, which I call “the piggyback principle”: If, with respect to an effect, E, an instance of a supervenient property, A, has no causal powers over and above, or in addition to, those had by its supervenience base, B, then the instance of A does not cause E (unless A is identical with B). In (...)
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  9. Ce este eugenia?Nicolae Sfetcu - manuscript
    Termenul eugenie, ca practică și domeniu de studiu, a fost inventat către Francis Galton în 1883, bazându-se pe opera vărului său, Charles Darwin, genetica mendeliană și teoriile lui August Weismann (teoria plasmei germenilor, conform căreia informația ereditară este transmisă numai de celulele germinale din gonade (ovare și testicule), nu de celule somatice) . Galton a definit eugenismul drept "studiul tuturor agenților aflați sub control uman care pot îmbunătăți sau afecta calitatea rasială a generațiilor viitoare". Eugenia a fost descrisă ulterior (...)
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