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Sociobiology proposes that social systems in animals and humans are the product of Darwinian biological evolution; Human behavioral ecology investigates how human behavior has become adapted to its environment via variation and selection; Evolutionary medicine investigates the origin of diseases by looking at the evolution both of the human ...
Charles Darwin in 1868. Darwinism is a term used to describe a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others. The theory states that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
This is followed by Biogenesis (Teilhard) and the origin of life or the Biosphere (Vernadsky, Teilhard), where there is a greater degree of complexity and consciousness (Teilhard - the "Within"), ecology (Vernadsky) comes into play, and progress and development is the result of Darwinian mechanisms of evolution. Finally there is human evolution ...
Darwin proposes sexual selection, driven by competition between males for mates, to explain sexually dimorphic features such as lion manes, deer antlers, peacock tails, bird songs, and the bright plumage of some male birds. [129] He analysed sexual selection more fully in The Descent of Man, and Selection in Relation to Sex (1871). Natural ...
Darwinian evolution by natural selection is pervasive in literature, whether taken optimistically in terms of how humanity may evolve towards perfection, or pessimistically in terms of the dire consequences of the interaction of human nature and the struggle for survival.
Darwin tried at a gathering at Downe on 22 April 1856 to amiably argue Huxley and Hooker round towards accepting evolution as a process, without going into the mechanism. Darwin intended to write human beings into Natural Selection through mid-1857. But his work required a tremendous amount of evidence and facts.
And humans evolved from apelike ancestors whether they did so by Darwin's proposed mechanism or by some other, yet to be discovered." [33] Similarly, biologist Richard Lenski says, "Scientific understanding requires both facts and theories that can explain those facts in a coherent manner. Evolution, in this context, is both a fact and a theory.
Alternatives to Darwinian evolution have been proposed by scholars investigating biology to explain signs of evolution and the relatedness of different groups of living things. The alternatives in question do not deny that evolutionary changes over time are the origin of the diversity of life, nor that the organisms alive today share a common ...