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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.
In Chapter III, Darwin asks how varieties "which I have called incipient species" become distinct species, and in answer introduces the key concept he calls "natural selection"; [123] in the fifth edition he adds, "But the expression often used by Mr. Herbert Spencer, of the Survival of the Fittest, is more accurate, and is sometimes equally ...
Charles Darwin's 1859 book, On the Origin of Species, convinced most biologists that evolution had occurred, but not that natural selection was its primary mechanism. In the 19th and early 20th centuries, variations of Lamarckism (inheritance of acquired characteristics), orthogenesis (progressive evolution), saltationism (evolution by jumps) and mutationism (evolution driven by mutations ...
GameSpy hailed [3] Natural Selection as "possibly the most ambitious user-made modification ever brought to fruition. This multiplayer-only mod somehow manages to transform the aging Half-Life into a seemingly brand-new, atmospheric, and surprisingly deep action-strategy game, pitting hive-minded aliens against resourceful space marines," and "Natural Selection's innovations are too numerous ...
The co-operative behaviour of social insects like the honey bee can be explained by kin selection.. Kin selection is a process whereby natural selection favours a trait due to its positive effects on the reproductive success of an organism's relatives, even when at a cost to the organism's own survival and reproduction. [1]
A French court found all 51 defendants guilty on Thursday in a mass rape case including Dominique Pelicot, who repeatedly drugged his then wife, Gisele, and allowed dozens of strangers into the ...
A top Federal Reserve official said Monday that he is leaning toward supporting an interest rate cut when the Fed meets in two weeks but that evidence of persistent inflation before then could ...
way we take our natural resources for granted, seeing both, rather casually, as being magically self-replenishing. We have not noticed how vulnerable either resource is until very late in the game, when systems start to falter. We have been slow to learn that liberty, like nature, demands a relationship with us in order for it to continue to ...