Results for 'multicellularity'

36 found
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  1. Evolution of multicellularity: cheating done right.Walter Veit - 2019 - Biology and Philosophy 34 (3):34.
    For decades Darwinian processes were framed in the form of the Lewontin conditions: reproduction, variation and differential reproductive success were taken to be sufficient and necessary. Since Buss and the work of Maynard Smith and Szathmary biologists were eager to explain the major transitions from individuals to groups forming new individuals subject to Darwinian mechanisms themselves. Explanations that seek to explain the emergence of a new level of selection, however, cannot employ properties that would already have to exist on that (...)
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  2. Understanding Multicellularity: The Functional Organization of the Intercellular Space.Leonardo Bich, Thomas Pradeu & Jean-Francois Moreau - 2019 - Frontiers in Physiology 10.
    The aim of this paper is to provide a theoretical framework to understand how multicellular systems realize functionally integrated physiological entities by organizing their intercellular space. From a perspective centered on physiology and integration, biological systems are often characterized as organized in such a way that they realize metabolic self-production and self-maintenance. The existence and activity of their components rely on the network they realize and on the continuous management of the exchange of matter and energy with their environment. One (...)
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  3. Integrating Multicellular Systems: Physiological Control and Degrees of Biological Individuality.Leonardo Bich - 2023 - Acta Biotheoretica 72 (1):1-22.
    This paper focuses on physiological integration in multicellular systems, a notion often associated with biological individuality, but which has not received enough attention and needs a thorough theoretical treatment. Broadly speaking, physiological integration consists in how different components come together into a cohesive unit in which they are dependent on one another for their existence and activity. This paper argues that physiological integration can be understood by considering how the components of a biological multicellular system are controlled and coordinated in (...)
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  4. Do Somatic Cells Really Sacrifice Themselves? Why an Appeal to Coercion May be a Helpful Strategy in Explaining the Evolution of Multicellularity.Adrian Stencel & Javier Suárez - 2021 - Biological Theory 16 (2):102-113.
    An understanding of the factors behind the evolution of multicellularity is one of today’s frontiers in evolutionary biology. This is because multicellular organisms are made of one subset of cells with the capacity to transmit genes to the next generation and another subset responsible for maintaining the functionality of the organism, but incapable of transmitting genes to the next generation. The question arises: why do somatic cells sacrifice their lives for the sake of germline cells? How is germ/soma separation (...)
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  5. Evolutionary Transitions to Multicellular Life. [REVIEW]Ellen Clarke - 2016 - Quarterly Review of Biology 91 (3):370-371.
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  6. Evolution of Individuality: A Case Study in the Volvocine Green Algae.Erik R. Hanschen, Dinah R. Davison, Zachariah I. Grochau-Wright & Richard E. Michod - 2017 - Philosophy, Theory, and Practice in Biology 9 (3).
    All disciplines must define their basic units and core processes. In evolutionary biology, the core process is natural selection and the basic unit of selection and adaptation is the individual. To operationalize the theory of natural selection we must count individuals, as they are the bearers of fitness. While canonical individuals have often been taken to be multicellular organisms, the hierarchy of life shows that new kinds of individuals have evolved. A variety of criteria have been used to define biological (...)
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  7. Using neurons to maintain autonomy: Learning from C. elegans.William Bechtel & Leonardo Bich - 2023 - Biosystems 232:105017.
    Understanding how biological organisms are autonomous—maintain themselves far from equilibrium through their own activities—requires understanding how they regulate those activities. In multicellular animals, such control can be exercised either via endocrine signaling through the vasculature or via neurons. In C. elegans this control is exercised by a well-delineated relatively small but distributed nervous system that relies on both chemical and electric transmission of signals. This system provides resources to integrate information from multiple sources as needed to maintain the organism. Especially (...)
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  8. Struggle within: evolution and ecology of somatic cell populations.Bartlomiej Swiatczak - 2021 - Cellular and Molecular Life Sciences 78 (21):6797-6806.
    The extent to which normal (nonmalignant) cells of the body can evolve through mutation and selection during the lifetime of the organism has been a major unresolved issue in evolutionary and developmental studies. On the one hand, stable multicellular individuality seems to depend on genetic homogeneity and suppression of evolutionary conflicts at the cellular level. On the other hand, the example of clonal selection of lymphocytes indicates that certain forms of somatic mutation and selection are concordant with the organism-level fitness. (...)
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  9. How Research on Microbiomes is Changing Biology: A Discussion on the Concept of the Organism.Adrian Stencel & Agnieszka M. Proszewska - 2018 - Foundations of Science 23 (4):603-620.
    Multicellular organisms contain numerous symbiotic microorganisms, collectively called microbiomes. Recently, microbiomic research has shown that these microorganisms are responsible for the proper functioning of many of the systems (digestive, immune, nervous, etc.) of multicellular organisms. This has inclined some scholars to argue that it is about time to reconceptualise the organism and to develop a concept that would place the greatest emphasis on the vital role of microorganisms in the life of plants and animals. We believe that, unfortunately, there is (...)
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  10.  67
    Human aging and evolution: The essentiality of life instability.Ni Putu Wulan Purnama Sari - 2024 - Sm3D Portal.
    Humans, as complex multicellular organisms, undergo both degradation and development through processes like apoptosis (programmed cell death) and mitosis (cell division).
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  11. Complexity and the Evolution of Consciousness.Walter Veit - 2023 - Biological Theory 18 (3):175-190.
    This article introduces and defends the “pathological complexity thesis” as a hypothesis about the evolutionary origins of minimal consciousness, or sentience, that connects the study of animal consciousness closely with work in behavioral ecology and evolutionary biology. I argue that consciousness is an adaptive solution to a design problem that led to the extinction of complex multicellular animal life following the Avalon explosion and that was subsequently solved during the Cambrian explosion. This is the economic trade-off problem of having to (...)
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  12. A Multi-scale View of the Emergent Complexity of Life: A Free-energy Proposal.Casper Hesp, Maxwell Ramstead, Axel Constant, Paul Badcock, Michael David Kirchhoff & Karl Friston - forthcoming - In Michael Price & John Campbell (eds.), Evolution, Development, and Complexity: Multiscale Models in Complex Adaptive Systems.
    We review some of the main implications of the free-energy principle (FEP) for the study of the self-organization of living systems – and how the FEP can help us to understand (and model) biotic self-organization across the many temporal and spatial scales over which life exists. In order to maintain its integrity as a bounded system, any biological system - from single cells to complex organisms and societies - has to limit the disorder or dispersion (i.e., the long-run entropy) of (...)
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  13. Organization needs organization: Understanding integrated control in living organisms.Leonardo Bich & William Bechtel - 2022 - Studies in History and Philosophy of Science Part A 93:96-106.
    Organization figures centrally in the understanding of biological systems advanced by both new mechanists and proponents of the autonomy framework. The new mechanists focus on how components of mechanisms are organized to produce a phenomenon and emphasize productive continuity between these components. The autonomy framework focuses on how the components of a biological system are organized in such a way that they contribute to the maintenance of the organisms that produce them. In this paper we analyze and compare these two (...)
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  14. Bacteria, sex, and systematics.L. R. Franklin - 2007 - Philosophy of Science 74 (1):69-95.
    Philosophical discussions of species have focused on multicellular, sexual animals and have often neglected to consider unicellular organisms like bacteria. This article begins to fill this gap by considering what species concepts, if any, apply neatly to the bacterial world. First, I argue that the biological species concept cannot be applied to bacteria because of the variable rates of genetic transfer between populations, depending in part on which gene type is prioritized. Second, I present a critique of phylogenetic bacterial species, (...)
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  15. Stem Cell Lineages: Between Cell and Organism.Melinda Bonnie Fagan - 2017 - Philosophy, Theory, and Practice in Biology 9 (6).
    Ontologies of living things are increasingly grounded on the concepts and practices of current life science. Biological development is a process, undergone by living things, which begins with a single cell and (in an important class of cases) ends with formation of a multicellular organism. The process of development is thus prima facie central for ideas about biological individuality and organismality. However, recent accounts of these concepts do not engage developmental biology. This paper aims to fill the gap, proposing the (...)
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  16. Quantum Consciousness in Animals.Contzen Pereira - 2015 - Journal of Metaphysics and Connected Consciousness 2.
    Consciousness occurs when one is in a state of awareness of one’s self and the external environment. Quantum consciousness is computed within the cytoskeleton of the cells; basic units of life which comprise of unicellular and multicellular animal life. Consciousness has always been linked to the nervous system but there are several studies that have recorded conscious behaviors in animals with and without nerve cells. Animal behavior is represented as conscious moment, which occurs due to an event, which may be (...)
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  17. Gene Mobility and the Concept of Relatedness.Jonathan Birch - 2014 - Biology and Philosophy 29 (4):445-476.
    Cooperation is rife in the microbial world, yet our best current theories of the evolution of cooperation were developed with multicellular animals in mind. Hamilton’s theory of inclusive fitness is an important case in point: applying the theory in a microbial setting is far from straightforward, as social evolution in microbes has a number of distinctive features that the theory was never intended to capture. In this article, I focus on the conceptual challenges posed by the project of extending Hamilton’s (...)
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  18. Collective Action in the Fraternal Transitions.Jonathan Birch - 2012 - Biology and Philosophy 27 (3):363-380.
    Inclusive fitness theory was not originally designed to explain the major transitions in evolution, but there is a growing consensus that it has the resources to do so. My aim in this paper is to highlight, in a constructive spirit, the puzzles and challenges that remain. I first consider the distinctive aspects of the cooperative interactions we see within the most complex social groups in nature: multicellular organisms and eusocial insect colonies. I then focus on one aspect in particular: the (...)
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  19. What are biological sexes?Paul E. Griffiths - manuscript
    Biological sexes (male, female, hermaphrodite) are defined by different gametic strategies for reproduction. Sexes are regions of phenotypic space which implement those gametic reproductive strategies. Individual organisms pass in and out of these regions – sexes - one or more times during their lives. Importantly, sexes are life-history stages rather than applying to organisms over their entire lifespan. This fact has been obscured by concentrating on humans, and ignoring species which regularly change sex, as well as those with non-genetic or (...)
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  20. What Is Life: An Informational Model of the Living Structures.Florin Gaiseanu - 2020 - Biochemistry and Molecular Biology 5 (2):18-28.
    Schröedinger’s question “what is life?” was a real challenge for the scientific community and this still remains as an opened question, because in spite of the important advances in various scientific branches like philosophy, biology, chemistry and physics,, each of them assesses life from its particular point of view to explain the life’ characteristic features, so not a coherent and well structured general model of life was reported. In this paper life is approached from informational perspective, starting from earlier Draganeacu's (...)
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  21. In search of common, information-processing, agency-based framework for anthropogenic, biogenic, and abiotic cognition and intelligence.Gordana Dodig-Crnkovic - 2022 - Zagadnienia Filozoficzne W Nauce 73:17-46.
    Learning from contemporary natural, formal, and social sciences, especially from current biology, as well as from humanities, particularly contemporary philosophy of nature, requires updates of our old definitions of cognition and intelligence. The result of current insights into basal cognition of single cells and evolution of multicellular cognitive systems within the framework of extended evolutionary synthesis (EES) helps us better to understand mechanisms of cognition and intelligence as they appear in nature. New understanding of information and processes of physical (morphological) (...)
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  22. Is Empiricism Empirically False? Lessons from Early Nervous Systems.Marcin Miłkowski - 2017 - Biosemiotics 10 (2):229-245.
    Recent work on skin-brain thesis suggests the possibility of empirical evidence that empiricism is false. It implies that early animals need no traditional sensory receptors to be engaged in cognitive activity. The neural structure required to coordinate extensive sheets of contractile tissue for motility provides the starting point for a new multicellular organized form of sensing. Moving a body by muscle contraction provides the basis for a multicellular organization that is sensitive to external surface structure at the scale of the (...)
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  23.  46
    The transition to civilization and symbolically stored genomes.Jon Beach - 2003 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 34 (1):109-141.
    The study of culture and cultural selection from a biological perspective has been hampered by the lack of any firm theoretical basis for how the information for cultural traits is stored and transmitted. In addition, the study of any living system with a decentralized or multi-level information structure has been somewhat restricted due to the focus in genetics on the gene and the particular hereditary structure of multicellular organisms. Here a different perspective is used, one which regards living systems as (...)
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  24. The significances of bacterial colony patterns.James A. Shapiro - 1995 - Bioessays 17 (7):597-607.
    Bacteria do many things as organized populations. We have recently learned much about the molecular basis of intercellular communication among prokaryotes. Colonies display bacterial capacities for multicellular coordination which can be useful in nature where bacteria predominantly grow as films, chains, mats and colonies. E. coli colonies are organized into differentiated non-clonal populations and undergo complex morphogenesis. Multicellularity regulates many aspects of bacterial physiology, including DNA rearrangement systems. In some bacterial species, colony development involves swarming (active migration of cell (...)
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  25. Quantum Resonance & Consciousness.Contzen Pereira - 2015 - Journal of Metaphysics and Connected Consciousness 2.
    Resonance can trigger of a series of quantum events and therefore induce several changes related to consciousness at micro as well as macro level within a living system. Therapeutic effects have been observed in several religious meditative and healing practices, which use resonance in the form of chanting and prayers. A living system may have many resonant frequencies due to their degrees of freedom, where each can vibrate as a harmonic oscillator supporting the progression of vibrations as waves that moves (...)
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  26. (1 other version)Vitalism and Cognition in a Conscious Universe.Marco Masi - 2022 - Communicative and Integrative Biology 1 (15):121-136.
    According to the current scientific paradigm, what we call ‘life’, ‘mind’, and ‘consciousness’ are considered epiphenomenal occurrences, or emergent properties or functions of matter and energy. Science does not associate these with an inherent and distinct existence beyond a materialistic/energetic conception. ‘Life’ is a word pointing at cellular and multicellular processes forming organisms capable of specific functions and skills. ‘Mind’ is a cognitive ability emerging from a matrix of complex interactions of neuronal processes, while ‘consciousness’ is an even more elusive (...)
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  27. Vertical Growth of Intelligence versus Horizontal Growth of Consciousness.Contzen Pereira - 2015 - Journal of Consciousness Exploration & Research 6 (7).
    In this paper I explore consciousness and intelligence in the setting of conventional neuroscience and cognitive science. To be conscious is to be aware but awareness is not always intelligence. Intelligence is task driven, and comes at a later stage in development than consciousness. Consciousness and intelligence are sometimes interdependent on each other, but have always been known as separate entities; an attempt to associate them, results in a lot of debate. This paper hypothesises the growth of consciousness to be (...)
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  28. Phenomenal worlds and nervous system activity.Fred Cummins - 2009 - In Proceedings of the 2009 Annual Meeting of the Cognitive Science Society.
    The epistemological situation of a single cell is considered. In chemotaxis, the relation between perception and action is found to be lawful and bidirectional. Consideration of the perception/action relation allows a characterization of the phe- nomenal world of the cell. This phenomenal world is grounded in perceptual distinctions that are relevant to the sustained vi- ability of the cell. Moving up the phylogenetic chain, this lawfulness, and its relation to the phenomenal world of ex- perience, is found to be essentially (...)
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  29. Physical basis for the emergence of autopoiesis, cognition and knowledge.W. P. Hall - 2011 - Kororoit Institute Working Papers (2):1-63.
    Paper type: Conceptual perspective. Background(s): Physics, biology, epistemology Perspectives: Theory of autopoietic systems, Popperian evolutionary epistemology and the biology of cognition. Context: This paper is a contribution to developing the theories of hierarchically complex living systems and the natures of knowledge in such systems. Problem: Dissonance between the literatures of knowledge management and organization theory and my observations of the living organization led to consideration of foundation questions: What does it mean to be alive? What is knowledge? How are life (...)
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  30. Non-Duality.Alexis Karpouzos - 2019 - COSMIC SPIRIT.
    Self – organizing is closely connected to the phenomenon of life. The creation of complexity, which is necessary for the creation of life, is connected to the process of storing information in molecules of which the living cell is constituted. All living systems, either unicellular or multicellular organisms, are extremely complex systems compared to all the other species of the non living matter that exist in the Universe. Complexity is the result of effect processes, leading to systems with great organization, (...)
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  31. Thoughts on Artificial Intelligence and the Origin of Life Resulting from General Relativity, with Neo-Darwinist Reference to Human Evolution and Mathematical Reference to Cosmology.Rodney Bartlett - manuscript
    When this article was first planned, writing was going to be exclusively about two things - the origin of life and human evolution. But it turned out to be out of the question for the author to restrict himself to these biological and anthropological topics. A proper understanding of them required answering questions like “What is the nature of the universe – the home of life – and how did it originate?”, “How can time travel be removed from fantasy and (...)
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  32. Behind Civilization: the fundamental rules in the universe.Huang Gavin (ed.) - 2022 - Sydney, Australia: Gavin Huang.
    In this new edition, a hypothesis is put forward for the first time to unify the Big Bang theory and the evolutionary theory by showing both events following the same set of fundamental interrelationships. As the evolution of life is a part of the evolutions of the universe, these two events express many fundamental similarities (this is self-similarity, which means a part of the system is similar to the whole system). Based on the same principle, the evolution of multicellular organisms, (...)
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  33. Complex Systems Biology.Roberto Serra - 2012 - In Vincenzo Fano, Enrico Giannetto, Giulia Giannini & Pierluigi Graziani (eds.), Complessità e Riduzionismo. ISONOMIA - Epistemologica Series Editor. pp. 100-107.
    The term “Complex Systems Biology” was introduced a few years ago [Kaneko, 2006] and, although not yet of widespread use, it seems particularly well suited to indicate an approach to biology which is well rooted in complex systems science. Although broad generalizations are always dangerous, it is safe to state that mainstream biology has been largely dominated by a gene-centric view in the last decades, due to the success of molecular biology. So the one gene - one trait approch, which (...)
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  34. (2 other versions)The Fundamental Interrelationships Model – An Alternative Approach to the Theory of Everything, Part 1.Gavin Huang - 2022 - In Huang Gavin (ed.), Behind Civilization: the fundamental rules in the universe. Sydney, Australia: Gavin Huang. pp. 400-.
    The quest for a unified “Theory of Everything” that explains the fundamental nature of the universe has long been a holy grail for scientists and philosophers, dating back to the ancient Greeks’ search for Arche. -/- So far, the mainstream of research on A Theory of Everything primarily focuses on the lifeless phenomena and laws of physics while ignores the realm of biology. However, a fundamentally different approach to the ToE has been put forward, presenting a viable alternative to address (...)
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  35. Considering Intra-individual Genetic Heterogeneity to Understand Biodiversity.Eva Boon - 2019 - In Elena Casetta, Davide Vecchi & Jorge Miguel Luz Marques da Silva (eds.), From Assessing to Conserving Biodiversity. Springer. pp. 219-232.
    In this chapter, I am concerned with the concept of Intra-individual Genetic Hetereogeneity (IGH) and its potential influence on biodiversity estimates. Definitions of biological individuality are often indirectly dependent on genetic sampling -and vice versa. Genetic sampling typically focuses on a particular locus or set of loci, found in the the mitochondrial, chloroplast or nuclear genome. If ecological function or evolutionary individuality can be defined on the level of multiple divergent genomes, as I shall argue is the case in IGH, (...)
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  36. (1 other version)Talking Monkeys: Philosophy, Psychology, Science, Religion and Politics on a Doomed Planet - Articles and Reviews 2006-2017.Michael Starks - 2017 - Las Vegas, NV USA: Reality Press.
    This collection of articles was written over the last 10 years and edited to bring them up to date (2017). The copyright page has the date of the edition and new editions will be noted there as I edit old articles or add new ones. All the articles are about human behavior (as are all articles by anyone about anything), and so about the limitations of having a recent monkey ancestry (8 million years or much less depending on viewpoint) and (...)
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