Darwin’s politics of selection

2019 ◽  
Vol 38 (1) ◽  
pp. 72-102
Author(s):  
Luis Manuel Sanchez

The uses of natural selection argument in politics have been constant since Charles Darwin’s times. They have also been varied. The readings of Darwin’s theory range from the most radically individualist views, as in orthodox socio-Darwinism, to the most communitarian, as in Peter Kropotkin’s and other socialist perspectives. This essay argues that such diverse, contradictory, and sometimes even outrageous political derivations from Darwin’s theory may be partially explained by some incompleteness and ambivalences underlying Darwin’s concepts. “Natural selection,” “struggle for existence,” and “survival of the fittest” are open concepts and may suggest some hierarchical and segregationist interpretations. Circumstantially, Darwin accepted social “checks,” such as discouraging marriage of “lower” individuals to prevent them from reproducing, in a vein of Malthusian politics. This makes Darwin’s theory of selection by struggle collide with his theory of social instincts, by which he explains the origins of morality. It also favors reading Darwin’sOn the Origin of SpeciesorThe Descent of Manfrom opposite, mostly ideological perspectives. Darwin’s position is ambivalent, although hardly unreasonable. The recognition he makes of social instincts, as well as the use of the concept of artificial selection, entails accepting the role of human consciousness, by which social evolution cannot be reduced to natural evolution, as socio-Darwinians did next and as some neo-Darwinists seem to repeat. On these grounds, this essay argues the inadequacy of the conventional model of natural selection for understanding politics. If we want to describe politics in Darwin’s language,artificialrather thannatural selectionwould be the concept that performs better for explaining the courses of politics in real society.

Anxiety ◽  
2020 ◽  
pp. 175-200
Author(s):  
Bettina Bergo

Having adopted Herbert Spencer’s evolutionary mechanism called survival of the fittest in Origin of Species (1859), Darwin turned his attentions to human societies and the remarkable turn entailed “natural selection applying to itself its own selective law.” In this fold in natural selection, human cultures evinced altruistic behaviors as well as egotistical rivalries. With Origin published six years after Adam Smith’s Theory of Moral Sentiments, Darwin would argue in favor of affects like sympathy and compassion. Yet how did such affects come about and how could they be demonstrated empirically? While hesitating over the origin of instincts in selection and habituation, Darwin simultaneously worked on his “demonstration” of the universality of five basic affects (pleasure, fear, suffering or grief, rage, and disgust). Though the mechanism of transmission of moral sentiments might be in doubt, these basic affects could be read on faces, whether sketched, photographed or through epistolary descriptions. One year after the Descent of Man (1871), Darwin published his thirty-year long research as The expression of the Emotions in Man and Animals (1872). In that work, he would argue that human expressions provide us a window into the affective mind, essentially of all human cultures. This was the empirical research needed for supporting the claim for the universality of human emotions. The work inaugurated a debate still current today centered on the role of culture in bodily semiosis. Surprisingly, Darwin aligned anxiety with grief rather than fear and suffering.


2021 ◽  
pp. 1-15
Author(s):  
Luis Sánchez

Abstract In Descent of Man, Charles Darwin noted the impact of political institutions on natural selection. He thought that institutions such as asylums or hospitals may deter natural selection; however, he did not reach a decisive answer. Questions remain as to whether the selective impacts of political institutions, which in Darwin’s terms may be referred to as “artificial selection,” are compatible with natural selection, and if so, to what extent. This essay argues that currently there appears to be an essential mismatch between nature and political institutions. Unfitted institutions put exogenous and disproportionate pressures on living beings. This creates consequences for what is postulated as the condition of basic equivalence, which allows species and individuals to enjoy similar chances of survival under natural circumstances. Thus, contrary to Darwin’s expectations, it is sustained that assumed natural selection is not discouraged but becomes exacerbated by political institutions. In such conditions, selection becomes primarily artificial and perhaps mainly political, with consequences for species’ evolutionary future.


2006 ◽  
Vol 35 ◽  
pp. 247-250
Author(s):  
H. Randle ◽  
E. Elworthy

The influence of Natural Selection on the evolution of the horse (Equus callabus) is minimal due to its close association with humans. Instead Artificial Selection is commonly imposed through selection for features such as a ‘breed standard’ or competitive ability. It has long been considered to be useful if indicators of characteristics such as physical ability could be identified. Kidd (1902) suggested that the hair coverings of animals were closely related to their lifestyle, whether they were active or passive. In 1973 Smith and Gong concluded that hair whorl (trichloglyph) pattern and human behaviour is linked since hair patterning is determined at the same time as the brain develops in the foetus. More recently Grandin et al. (1995), Randle (1998) and Lanier et al. (2001) linked features of facial hair whorls to behaviour and production in cattle. Hair whorl features have also been related to temperament in equines (Randle et al., 2003).


Genetics ◽  
1980 ◽  
Vol 94 (4) ◽  
pp. 989-1000
Author(s):  
Francis Minvielle

ABSTRACT A quantitative character controlled at one locus with two alleles was submitted to artificial (mass) selection and to three modes of opposing natural selection (directional selection, overdominance and underdominance) in a large random-mating population. The selection response and the limits of the selective process were studied by deterministic simulation. The lifetime of the process was generally between 20 and 100 generations and did not appear to depend on the mode of natural selection. However, depending on the values of the parameters (initial gene frequency, selection intensity, ratio of the effect of the gene to the environmental standard deviation, fitness values) the following outcomes of selection were observed: fixation of the allele favored by artificial selection, stable nontrivial equilibrium, unstable equilibrium and loss of the allele favored by artificial selection. Finally, the results of the simulation were compared to the results of selection experiments.


2017 ◽  
Vol 114 (8) ◽  
pp. E1305-E1305 ◽  
Author(s):  
Philipp Mitteroecker ◽  
Simon M. Huttegger ◽  
Barbara Fischer ◽  
Mihaela Pavlicev

2007 ◽  
Vol 13 (3) ◽  
pp. 249-258 ◽  
Author(s):  
David Newth ◽  
David G. Green

Biomolecular studies point increasingly to the importance of modularity in the organization of the genome. Processes such as the maintenance of metabolism are controlled by suites of genes that act as distinct, self-contained units, or modules. One effect is to promote stability of inherited characters. Despite the obvious importance of genetic modules, the mechanisms by which they form and persist are not understood. One clue is that functionally related genes tend to cluster together. Here we show that genetic translocation, recombination, and natural selection play a central role in this process. We distill the question of emerging genetic modularity into three simulation experiments that show: (1) a tendency, under natural selection, for essential genes to co-locate on the same chromosome and to settle in fixed loci; (2) that genes associated with a particular function tend to form functional clusters; and (3) that genes within a functional cluster tend to become arranged in transcription order. The results also imply that high proportions of junk DNA are essential to the process.


1966 ◽  
Vol 8 (2) ◽  
pp. 205-218 ◽  
Author(s):  
B. D. H. Latter

This paper is concerned with three related aspects of the behaviour of populations under artificial selection for increased scutellar bristle number: (i) the pattern of response on the probit scale; (ii) the homeostatic behaviour of the selection lines on relaxation of artificial selection; and (iii) correlated responses in generation interval, reproductive capacity and competitive ability. The study was designed so that linkage would be a comparatively unimportant factor in promoting correlated responses to selection, and the effects of genetic sampling from generation to generation were also reduced to a low level.Progress from the base mean of 4·05 bristles in females to a level of almost 8 bristles has been shown to involve two distinct phases with realized heritabilities of 0·34 and 0·10 respectively, the zone of transition corresponding closely to the position of the 6/7 threshold on the underlying scale. In addition to an apparent average reduction of about 25% in the additive genetic standard deviation in phase II by comparison with phase I, the loss in response due to the opposition of natural selection has been shown to reach a maximum near the zone of separation of the two phases.The pattern of behaviour of the populations under artificial and natural selection has suggested the presence in the base population of genes of large effect on both bristle number and reproductive fitness. There is also evidence of additional genetic variation in bristle number which is effectively neutral with respect to fitness. Continued selection for increased scutellar bristle number in large populations has been shown to reduce mean competitive ability by more than 80%.


2016 ◽  
Vol 3 (11) ◽  
pp. 160496 ◽  
Author(s):  
Bradly Alicea

To examine the role of natural selection in fecundity in a variety of Caenorhabditis elegans genetic backgrounds, we used an experimental evolution protocol to evolve 14 distinct genetic strains over 15–20 generations. We were able to generate 790 distinct genealogies, which provided information on both the effects of natural selection and the evolvability of each strain. Among these genotypes are a wild-type (N2) and a collection of mutants with targeted mutations in the daf-c, daf-d and AMPK pathways. Differences are observed in reproductive fitness along with related changes in reproductive timing. The majority of selective effects on fecundity occur during the first few generations of evolution, while the negative selection for reproductive timing occurs on longer time scales. In addition, positive selection on fecundity results in positive and negative strain-dependent selection on reproductive timing. A derivative of population size per generation called reproductive carry-over (RCO) may be informative in terms of developmental selection. While these findings transcend mutations in a specific gene, changes in the RCO measure may nevertheless be products of selection. In conclusion, the broader implications of these findings are discussed, particularly in the context of genotype-fitness maps and the role of uncharacterized mutations in individual variation and evolvability.


2014 ◽  
Vol 111 (33) ◽  
pp. 12109-12114 ◽  
Author(s):  
B. R. Wasik ◽  
S. F. Liew ◽  
D. A. Lilien ◽  
A. J. Dinwiddie ◽  
H. Noh ◽  
...  

BJHS Themes ◽  
2021 ◽  
pp. 1-22
Author(s):  
Nasser Zakariya

Abstract Darwin in The Descent of Man deliberates over the question of progress in relation to three categories of traits – aesthetic, moral and intellectual – attending to their interplay. The later formulations of Thomas Henry Huxley and Alfred Russel Wallace shift and reframe the terms for weighing together progress and the relationship across these traits, downplaying the role of aesthetic assessments. Huxley and Wallace invoke ‘antagonisms’ countering, respectively, ‘ethical progress’ and ‘cosmic process’, ‘humanity – the essentially human emotion’ and ‘physical and even intellectual race-improvement’. Thereafter, evolutionary antagonisms reappear – whether to endorse, dismiss or overcome them – and they remain relevant in evolutionary arguments, whether made explicit or left implicit. Following a thread of ongoing appeals to this interplay of traits and corresponding antagonisms invoking Huxley's 1893 lecture ‘Evolution and ethics’, implicit differences appear in the treatment of aesthetic, moral and intellectual development. These treatments maintain the progress that their own ethical systems represented, even while granting moral variation and conceding independent/alternative notions of the beautiful. They generally took as granted the uniformity of intellectual judgements, where evolutionary progress was both ethical and intellectual/scientific, even when speculating on the development of different types of mind. As characteristic of future-oriented visions of progress by the first decades of the twentieth century, sexual selection was subsumed under natural selection.


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