Thomas Malthus
The theory was developed independently by Charles Darwin and Alfred Russel Wallace.
On July 1st 1858 there was a joint reading of the theories put forward by both Charles Robert Darwin and Alfred Russel Wallace at the Linnaen Society in London.November 24, 1859 is when Charles Robert Darwin published,On the Origin of Species By Means of Natural Selection or the Preservation of Favored Races in the Struggle For Life
Alfred Wallace
The same as Darwin's. They should have recived equal credit.
Alfred Russel Wallace
At the exact some time as Darwin. In 1858 the two theories were read out to the Linnaen society. This man was Alfred Russel Wallace.
The reason the focus, or major credit goes to Darwin is, though they both realized the principles of evolution, Wallace's presentation was little more than the realization. Darwin had had the realization and spent almost twenty years documenting and exploring the relations and complexities of said theory. Wallace himself had no difficulty with Darwin receiving the majority of the credit. Wallace had sent Darwin his paper on the topic, which kind of shocked Darwin that some one else might scoop his idea, he decided to present his idea to the Royal Society, and when he did so, he presented at the same time Wallace's paper, a very gracious thing to do on Darwins part. Wallace was at the time totally unaware of what was happening and only learned after the fact that he was presented to the Royal Society as co-discoverer of, The Theory Of Evolution By Natural Selection.
Alfred Russel Wallace independently came up with the theory of evolution. His and Darwin's papers on evolution were jointly presented in 1858, and so both are credited with the discovery of evolution by natural selection.
Charles Darwin wrote The Origin of Species in 1859, in which he outlined his theories of evolution. The theory of natural selection states that individual variation in a population allows some members a greater chance of survival than others.Darwin and Wallace, but Wallace didn't publish.
Charles Robert Darwin and Alfred Russel Wallace developed similar and almost simultaneous theories of evolution by natural selection.
Both Charles Robert Darwin and Alfred Russel Wallace developed theories of evolution by natural selection.
Darwin was not really influenced while on the Beagle but 5 years after he returned to England he was influenced by Alfred Russel Wallace to finally publish his book (the Origin of Species by Means of Natural Selection.) Darwin was afraid to publish his book because in his mind it took away a need for a God. His book challenged the religious and scientific communities. Wallace had come up with the same ideas by himself and was not afraid to share his theories. Darwin wanted to get credit for his work so he published his book and theories first.
I'm not certain that Wallace was sidelined; he was more of a field biologist that Darwin - apart from Darwin's voyage on the Beagle. Darwin's publications before his work on natural selection had made Darwin very well known and celebrated. Wallace, was pleased to be associated with Darwin and without Darwin, the theory of Natural Selection would not have been taken so seriously. Darwin's publication of Origin of the Species sealed his fame; it became a best seller and Darwin became strongly associated with the theory. Wallace agreed that Darwin deserved the credit as Darwin had done most of the research behind the theory. Wallace and Darwin corrosponded throughout their lives and Darwin considered Wallace one of the great thinkers on evolution.
There is no " theory of evolution " as evolution is a fact. The theory is; the theory of evolution by natural selection and explains much about the fact of evolution. Charles Robert Darwin and Alfred Russel Wallace come up with the theory of evolution by natural selection, though natural selection is a phrase coined by Darwin.
Charles Robert Darwin and Alfred Russel Wallace developed complementing theories of evolution and presented them to the Linnean society in 1858.
Evolution is a fact, not a theory. There are theories as to how the process of evolution works. The most notable is through natural selection proposed by Darwin and Wallace
All of the above