Organisms show variation of traits . For Darwin, natural selection is a drawn-out, complex process involving multiple interconnected causes.
Author Summary Natural selection promotes the survival of the fittest individuals within a species. Natural selection occurs when some of those traits help some individuals survive and reproduce more than others. Teach your students about natural selection: Clipbirds, a classroom activity for grades 6-12. Natural selection is probably best explained in his words, taken from his landmark work "On the Origin of Species." The Scientist's articles tagged with: natural selection. Articles on Natural selection Displaying 1 - 20 of 47 articles We propose same-sex attraction evolved to allow greater social integration and stronger same-sex social bonds. His masterwork, the 1859 "Origin of Species," offered ample evidence for evolution having occurred, as well as the first strong explanation for its mechanism, natural selection. Find additional lessons, activities, videos, and articles that focus on natural selection. Natural Selection is likely a cornerstone of the Origin of Life Some scientists believe that life first appeared in the universe as short self-replicating RNA polymers. Breeding bunnies, a classroom activity for grades 9-12. Over many generations, this may result in the maintenance of ancestral traits (conservation through purifying selection), or the emergence of newly beneficial traits (adaptation through positive selection). An island songbird evolved into five populations of different color variants despite inhabiting territories just 10 kilometers apart. Charles Darwin popularised the term "natural selection", contrasting it with artificial selection, which in his view is intentional, whereas natural selection is not. "The many slight differences which appear in the offspring of the same parents may be called individual differences. Charles Darwin and Alfred Wallace are the two co-discoverers of natural selection (Darwin & Wallace 1858), though, between the two, Darwin is the principal theorist of the notion whose most famous work on the topic is On the Origin of Species (Darwin 1859). 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.
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