Why did life emerge?

2008 ◽  
Vol 7 (3-4) ◽  
pp. 293-300 ◽  
Author(s):  
Arto Annila ◽  
Erkki Annila

AbstractMany mechanisms, functions and structures of life have been unraveled. However, the fundamental driving force that propelled chemical evolution and led to life has remained obscure. The second law of thermodynamics, written as an equation of motion, reveals that elemental abiotic matter evolves from the equilibrium via chemical reactions that couple to external energy towards complex biotic non-equilibrium systems. Each time a new mechanism of energy transduction emerges, e.g., by random variation in syntheses, evolution prompts by punctuation and settles to a stasis when the accessed free energy has been consumed. The evolutionary course towards an increasingly larger energy transduction system accumulates a diversity of energy transduction mechanisms, i.e. species. The rate of entropy increase is identified as the fitness criterion among the diverse mechanisms, which places the theory of evolution by natural selection on the fundamental thermodynamic principle with no demarcation line between inanimate and animate.

Author(s):  
Francisco J. Ayala ◽  
Camilo J. Cela-Conde

This chapter starts with the general principles of the theory of evolution by natural selection advanced by Darwin and the Mendelian theory of heredity. Next comes consideration of the “new-Darwinian synthesis” or “synthetic theory,” which integrates both precedents into what has become the current paradigm of the life sciences. Molecular evolution and population genetics follow, including epigenetic processes. Next, special models of selection are considered, such as sexual selection and the models that account for altruistic behavior. After the mechanisms of speciation, the main concepts of systematics are explored, which facilitate understanding of different traits. The chapter finally explores the fundamental concepts of taxonomy and the methods from phenetics to cladistics, that makes it possible to evaluate the diversity of organisms and the methods for dating the fossil record.


2017 ◽  
Vol 122 (4) ◽  
pp. 1079-1104 ◽  
Author(s):  
Henry M. Cowles

Abstract This is an essay on the origin of theories. It argues that methodology can do more than shape scientific theories—sometimes, vocabularies of method become such theories. The origin of Charles Darwin’s theory of evolution by natural selection is a case in point: Darwin’s well-known attention to methodological matters not only framed but bled into his theory of nature. A careful student of contemporary methodology, Darwin sought guidance for using a controversial tool in the scientific world in which he came of age: the hypothesis. In the process of reading the works of John Herschel and William Whewell, Darwin turned nature itself into a man of science. The hypotheses and testing of scientific practice were mirrored in the variations and selection of the natural world. Though unintentional, Darwin’s naturalization of a vocabulary of method helped pave the way for applications of evolutionary theory to the study of the human mind and, completing the circle, to the philosophy of science. Considering the role of vocabularies of method in the origin of theories suggests new directions for the study of cognitive history and the power of language to transform the historical imagination.


1988 ◽  
Vol 66 (1) ◽  
pp. 11-17 ◽  
Author(s):  
K. A. Robson ◽  
R. K. Scagel ◽  
J. Maze

Comparisons of differences between morphological means of individual plant parts indicate that the greatest source of variation in two populations of Balsamorhiza sagittata is the individual plants within populations; within-population diversity is greater than among-population diversity. Variable covariance and correlations differ between individual plants and there are subgroups of interrelated variables that can be tied to developmental phenomena. The relationship between developmental phenomena and these groups of variables suggests a relationship between organizational, as reflected in variable interrelationships, and ontogenetic variation. These results are not adequately explained by neoDarwinian theory but are explained more comprehensively by a theory of evolution that views biological change over time as an intrinsically driven self-organization, accompanied by an increase in complexity (a manifestation of the "Second Law of Thermodynamics" as it applies to open systems).


2016 ◽  
Vol 48 (1) ◽  
pp. 133-150
Author(s):  
Radosław Siedliński

Abstract The aim of the paper is twofold. First, it presents the fundamental ideas and results of the “metabiology” created by Gregory Chaitin. Second, it shows why metabiology ultimately fails as a candidate for being a proper mathematical model for the theory of evolution by natural selection. Because of genocentric reductionism and biological oversimplifications, metabiology should be perceived rather as an expression of the philosophical worldview of it’s author.


Author(s):  
Samir Okasha

In 1859 Charles Darwin published On the Origin of Species, in which he set out his theory of evolution. The book marked a turning point in our understanding of the natural world and revolutionized biology. ‘Evolution and natural selection’ outlines the theory of evolution by natural selection, explaining its unique status in biology and its philosophical significance. It considers how Darwin’s theory undermined the ‘argument from design’, a traditional philosophical argument for the existence of God; how the integration of Darwin’s theory with genetics, in the early 20th century, gave rise to neo-Darwinism; and why, despite evolutionary theory being a mainstay of modern biology, in society at large there is a marked reluctance to believe in evolution.


1999 ◽  
Vol 22 (5) ◽  
pp. 888-888 ◽  
Author(s):  
Gwen J. Broude

Evidence reveals numerous cross-cultural universals regarding human mental processes and behavior. Similarly, cross-cultural data are consistent with predictions from theories of kin selection, reciprocal altruism, and sexual selection inspired by Darwin's theory of evolution by natural selection. Thus, the “annals of human behaviour” do provide “example[s] fitting the sociobiological bill,” (Lifelines, p. 202) thereby, supporting sociobiological accounts of human behavior.


2018 ◽  
Vol 5 (11) ◽  
pp. 181038 ◽  
Author(s):  
Darragh Hare ◽  
Bernd Blossey ◽  
H. Kern Reeve

The theory of evolution by natural selection can help explain why people care about other species. Building upon recent insights that morality evolves to secure fitness advantages of cooperation, we propose that conservation ethics (moral beliefs, attitudes, intuitions and norms regarding other species) could be adaptations that support cooperation between humans and non-humans. We present eco-evolutionary cost–benefit models of conservation behaviours as interspecific cooperation (altruism towards members of other species). We find that an evolutionary rule identical in structure to Hamilton's rule (which explains altruistic behaviour towards related conspecifics) can explain altruistic behaviour towards members of other species. Natural selection will favour traits for selectively altering the success of members of other species (e.g. conserving them) in ways that maximize inclusive fitness return benefits. Conservation behaviours and the ethics that evolve to reinforce them will be sensitive to local ecological and socio-cultural conditions, so will assume different contours in different places. Difficulties accurately assessing costs and benefits provided by other species, time required to adapt to ecological and socio-cultural change and barriers to collective action could explain the apparent contradiction between the widespread existence of conservation ethics and patterns of biodiversity decline globally.


1999 ◽  
Vol 32 (4) ◽  
pp. 483-484
Author(s):  
GEORGE BECCALONI

BSHS members might be interested to learn that an organization named the ‘A. R. Wallace Memorial Fund’ has recently been established in order to restore and protect the hitherto neglected grave of Alfred Russel Wallace (1823–1913), one of the greatest tropical naturalists of the nineteenth century. Wallace is best known as being the co-originator, with Charles Darwin, of the theory of evolution by natural selection, and for his book The Malay Archipelago, which is regarded as one of the most important of all Victorian travel works.Wallace is buried together with his wife Annie in Broadstone Cemetery, Dorset. The grave is marked by an unusual and striking monument: a seven-foot tall fossilised conifer trunk from the Portland beds mounted on a large cubic base of Purbeck stone. Unfortunately, the monument has not been properly maintained for many years and it is now in poor condition. Furthermore, the lease on the grave has only fourteen years left to run before it expires, after which there is a danger that the plot could be used for another burial.The primary aims of the Wallace Memorial Fund are to restore the monument, apply for it to be officially listed by the Department of Culture, Media and Sport, and to extend the lease on the plot. A. R. Wallace's grandson Mr Richard Wallace (who is the treasurer of the Fund) plans to transfer the lease to the Linnean Society of London once the restoration work has been completed. This will ensure the grave's long-term protection.A secondary aim of our project is to commission English Heritage to produce a commemorative ceramic plaque and install it on ‘The Dell’ (Grays, Essex), where Wallace lived from 1872 to 1876. This is the only surviving one of three houses which Wallace built (it is currently a convent) and he wrote his important book The Geographical Distribution of Animals there. It is also notable in being one of the first houses in Britain to have been constructed of concrete.The total cost of the project will be approximately £4955. Contributions to date total £3000 leaving £1955 still to be raised. If any members of the Society would like to make a donation then cheques should be made payable to ‘The A. R. Wallace Memorial Fund’ and sent to Dr G. W. Beccaloni, A. R. Wallace Memorial Fund, c/o Entomology Department, The Natural History Museum, Cromwell Road, South Kensington, London SW7 5BD (Tel. 0207 942 5361, E-mail: [email protected]).


Philosophy ◽  
1973 ◽  
Vol 48 (183) ◽  
pp. 35-49 ◽  
Author(s):  
Andrew Woodfield

Darwinism is ‘much more than a theory’, said the German botanist Albert Wigand in 1875; ‘it is a frame of mind which dominates thought, a resuscitated “Naturphilosophie”, in which the terms “Polarity”, “Totality”, “Subject”, “Object” are replaced by terms such as “Struggle for Existence”, “Inheritance”, “Selection”, and so on.’ Subsequent events have indicated that Wigand had a point. But it is not clear to us yet what exactly the point is. Interest in Man's Place in Nature, and in his alleged biological uniqueness as a language-user and tool-maker, is as great now as it was in 1871 when Darwin's Descent of Man was first published. We now have access to well over a hundred years' worth of material sparked off by The Origin of Species, linking Darwin's theory of evolution by natural selection to almost every field under the sun. Yet the precise status of his theory is still the subject of vigorous controversy in philosophy of science.


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