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Natural selection is the differential survival and reproduction of individuals due to differences in phenotype.It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
Darwinism subsequently referred to the specific concepts of natural selection, the Weismann barrier, or the central dogma of molecular biology. [2] Though the term usually refers strictly to biological evolution, creationists have appropriated it to refer to the origin of life or to cosmic evolution, that are distinct to biological evolution, [3] and therefore consider it to be the belief and ...
Evolution through natural selection only causes successive generations of a population of organisms to become more fit for their environment than previous generations. [131] A population can evolve to become simpler or to have a smaller genome , [ 132 ] and atavistic ancestral genetic traits can reappear after having been lost through ...
That day, Huxley held the first meeting of what became the influential "X Club" devoted to "science, pure and free, untrammelled by religious dogmas". [166] By the end of the decade, most scientists agreed that evolution occurred, but only a minority supported Darwin's view that the chief mechanism was natural selection. [167]
Darwin explained sexual selection as a combination of "female choosiness" and "direct competition between males". [32] Antoinette Blackwell, one of the first women to write a critique of Darwin. Darwin's theories of evolution by natural selection were used to try to show women's place in society was the result of nature. [33]
On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) [3] is a work of scientific literature by Charles Darwin that is considered to be the foundation of evolutionary biology. It was published on 24 November 1859. [4]
The concept of sexual selection was introduced by Charles Darwin as an element of his theory of natural selection, [1] Sexual selection is a biological way one sex chooses a mate for the best reproductive success. Most compete with others of the same sex for the best mate to contribute their genome for future generations.
Darwin's theory of evolution by natural selection is the only scientific explanation for why an animal's behaviour is usually well adapted for survival and reproduction in its environment. However, claiming that a particular mechanism is well suited to the present environment is different from claiming that this mechanism was selected for in ...