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The Evolution Site The theory of natural selection as the underlying principle of evolution is the central force in the current biology. It connects disciplines such as genetics, microbiology and palaeontology. However, the study of evolution is often controversial and the misinformation that results can confuse people regarding its fundamentals. This site explains the fundamental concepts. What is Evolution? Modern evolutionary theory is based on the gradual and cumulative changes that happen in populations over time. These changes are the result of natural selection, a process that increases the amount of organisms that possess beneficial traits that help them survive and reproduce in a particular environment. These organisms produce more offspring as a result of their positive traits. This leads to the genetic changes that can eventually lead to the development of new species. The term “evolution” is often associated with the notion of “survival of the strongest,” which implies that those people who are the most adapted to a particular environment will be more successful than those who aren't well-adapted. In actuality this is just one of many ways that evolution can occur. Another popular way to use the word evolution is to suggest that a species can change from one state to the next. This type of view of evolution is called anagenetic or cladogenesis. The scientific definition of evolution is not in agreement with this view. Instead, the theory of evolution that is scientifically based concentrates on the changes that occur within populations over time, and these changes are caused by genetic mutations and natural selection. Some scientists, such as the great Charles Darwin, advocated this view of evolution. Others, such as Alfred Russel Wallace, who created the macroevolution theory and believed that this was the only way the higher forms of life could be derived from lower forms. To be able to be considered a theory, it has to be capable of standing up to rigorous tests and evidence. The evidence for evolution has stood up to the test of time and has been backed by a myriad of studies across various sciences, from biology to geology, chemistry to astronomy. Evolution is the foundation of science and is believed by the majority of scientists across the world. However, there are many misconceptions about the theory of evolution, specifically the relationship it has with religion. What is the Theory of Evolution? Evolution is the scientific explanation of how living things change over time. It is based on few well-established facts: that many more offspring are created than can survive and that different individuals have their physical traits and they are able to pass on traits to the next generation. These observations are backed up by an increasing body of evidence from molecular biology, palaeontology climatology functional geology and morphology. Charles Darwin and Alfred Russel Wallace independently developed the theory of evolution through selection in the mid-19th century as a reason why organisms are able to adapt to their biological and physical environments. It is the most well-supported and tested theory in the field of science. Its predictions were confirmed by the fact that, for instance, more complex organisms have less genetic mutations. The more successful an organism is in terms of its longevity and reproducing the more likely it will pass its genes on to the next generation. Some people oppose evolution based on the belief that it implies that there is no reason to life. Many scientists who are religious, like the Cambridge Palaeontologist Simon Conway Morris (BioLogos, 2014), believe that evolution is compatible with faith in God and can even be enhanced by it. Many highly skilled evolutionary biologists have been involved in constructing and testing the theory of evolution, including several revered evangelical Christian leaders. Many of these researchers contributed to the understanding a wide range phenomena, including genomics and phylogenetics, as well as the formation and function fossils. The word “theory” is often used incorrectly to mean a guess or speculation however it actually refers to a scientific idea that has been thoroughly tested and refined over time. Scientists test their theories by repeating experiments or observations that led to them. Thus, the theory of evolution has been repeatedly proven out, as have the related theories of Copernican, atomic and germ theory. What is the Process of Evolution? The process of evolution is a gradual shift in the genetic makeup of different individuals within a species over time. This change is a result of natural selection, which favors individuals who are better adapted to their environment. The more adapted individuals have a better chance of survival and reproduction. As more people survive and reproduce, their genes become more prevalent in the general population. This process is sometimes called “survival for the fittest.” According to evolution theory the causes of mutations that result in genomic variation are what triggers evolutionary change. These mutations may occur at random or be affected by the environment. When mutations occur at random and occur in a random manner, the frequency of the allele may vary from generation to generation. If a mutation is beneficial, it will increase the frequency of alleles which causes the allele to be spread across the population. The changes in frequency of alleles can lead to new species over time. The new species can then continue to evolve and become newer forms. This is known as macroevolution. The development of new species is typically a result of changes in the environment that make certain resources accessible or creates new environmental issues. 무료에볼루션 of finches in the Galapagos Islands, for example, is due to the availability of fresh food and the necessity to defend themselves against predators. In a wider context the term “evolution” refers to any change that takes place in the characteristics of organisms over time. The change could be small like the development of a new coloration or massive, for instance, the development of a brand new organ. Scientists who believe in the theory of evolution generally agree on the importance of genetic change in the process that causes evolution. They also agree that evolution is a process that occurs over time, typically over millions of years. However, they differ on the role of different factors in accelerating or retarding this process, such as the impact of environmental pressures, sexual selection, and mutation bias. Despite 에볼루션사이트 , most scientists believe that evolution has happened and that the evidence for this is overwhelming. What is the Evidence of Evolution? Throughout the years since Darwin's time, scientists have collected evidence that supports his theory of evolution. This evidence comes from fossils which show the evolution of organisms over time. Similarities between living and non-living organisms as well as embryology, biogeography, and genetics are also evidence. The evolutionary tree is the most effective way to prove evolution. It shows how species are related. Homologous structures are another source of evidence. They share a common structure, but they perform different functions in different species, for instance, the wing of a bird or bat. The fact that different species develop and adapt to the same environment is another sign of evolution. For instance, arctic-foxes and ptarmigans grow seasonal white pelts to blend in with snow and ice. This is a kind of convergent evolutionary, which suggests that the species have common ancestral ancestors. Another evidence point is the existence of vestigial structures. These are unutilized parts of an organism which could have served a function in the distant ancestors. The human appendix for instance, is a vestige from an organ that was once used to digest food. These structures tend to shrink in size as they are no longer utilized in a process called natural selection. Scientists have also gathered evidence of evolution through observation and testing. Evidence for evolution is grouped into six categories: directly visible small-scale changes, biogeographic distribution, comparative anatomy, the fossil record, classification and genetics. Each of these categories provides compelling evidence for the evolution of life. Many people have misconceptions about the theory of evolution. But, it's a fact. It is not a speculative theory, but rather a powerful collection of evidence built on decades of observation. Scientists continue to collect and analyze new data to better understand the evolution of Earth's existence, regardless of whether people believe in the theory of evolution or not. This information will allow scientists to better understand how we can avoid future global catastrophes, and how to use the resources on our planet. It will also allow us to better meet the needs of all the people living on the planet.