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The Evolution Site The theory of evolution by natural selection is the unifying force of modern biology. It connects disciplines such as genetics, microbiology and Palaeontology. The study of evolution may be controversial and the misinformation that results can lead to confusion about its fundamentals. This site clarifies essential concepts. What is Evolution? Modern evolutionary theory focuses on the gradual and cumulative changes that occur in populations over time. These changes are caused by natural selection, a process that increases the number of organisms who have traits that are beneficial and help them survive and reproduce in a particular environment. They produce more offspring as a result of their positive traits. This could lead to a genetic mutation which could eventually lead to new species. The term “evolution” is often associated with the notion of “survival of the fittest,” which means that people who are most well-adapted to a particular set of environmental conditions will be more successful than those who aren't well-adapted. This is just one of many ways that evolution can occur. Another way to use the word evolution is to suggest that a species will progress from one state to the next. This view of evolution is called anagenetic or cladogenesis. The scientific definition of evolution does not support this idea. Instead, the theory of evolution that is scientifically based focuses on changes that occur within populations over time, and these changes are the result of mutations that produce genomic variation and natural selection. Some scientists, including the great Charles Darwin, advocated this theory of evolution. Others, such as Alfred Russel Wallace, who created the macroevolution theory, believed that this was the only way the higher forms of life could be derived from lower ones. To be able to be called a theory, it has to be capable of surviving rigorous testing and evidence. The evidence for evolution has stood the test of time and has been supported by countless studies in many scientific disciplines, from biology to geology, chemistry to astronomy. In reality, evolution is accepted as one of the fundamental tenets of science today, and it is backed by the majority of scientists across the globe. Many people are misinformed about the nature of evolution theory particularly how it is connected with religion. What is the Theory of Evolution? Evolution is an explanation for how living things change with time. It relies on a number of well-established observations that show that more offspring are created than are likely to survive; that individuals differ from one another in their physical characteristics (phenotype); that different traits have different rates of survival and reproduction and can be passed down to future generations. These observations are backed by the increasing body of evidence from molecular biology, palaeontology, functional morphology, climatology, and geology. Charles Darwin and Alfred Russel Wallace independently conceived the theory of evolution by selection in the middle of the 19th century as an explanation why organisms are adapted their biological and physical environments. It is today the most supported and widely-tested theory in all of science. Its predictions have been borne out by the evidence that, for instance, more complex organisms are more likely to have fewer genetic mutations than simpler ones. The more successful an organism gets in terms of survival and reproducing the more likely it will pass its genes on to future generations. Some people are against evolution because they believe that it suggests that there is no purpose to life. However, a lot of scientists who are also religious, such as the prominent Cambridge palaeontologist Simon Conway Morris, believe that evolution isn't just compatible with belief in God but can be enhanced by it (BioLogos 2014). Many highly qualified evolutionary biologists have been involved in developing and testing the theory of evolution, including several revered evangelical Christian leaders. Many of these scientists have contributed to the understanding of a wide variety of phenomena, like phylogenetics, genomics, and the development and role of fossils. The term “theory” that is often misused is a reference to a scientific hypotheses that have been tested and refined over time. Scientists test hypotheses by repeating the experiments or observations that led them to them. Thus, the theory of evolution has been repeatedly borne out and so have the theories of Copernican, germ theory, and atomic theory. What is the Process of Evolution? The process of evolution is the gradual shift over time in the proportion of genetically distinct individuals within a particular species. This is the result of the natural selection of those who are better adapted to their environment. The individuals who are more adapted have higher chances of reproduction and survival. As more of these individuals survive and reproduce, their genes become more common in the general population. This process is sometimes called “survival for the strongest.” According to the theory of evolution the mutations that cause genetic variation are the primary reason for evolution. These mutations can occur at random, or under the influence of the environment. When mutations are random, the frequencies of the resulting alleles may vary from generation to generation. In contrast, when the mutation is beneficial it will increase the frequency of the allele, which causes it to spread through the population. Over time, these shifts in the frequencies of alleles can result in the creation of new species. The new species will evolve and develop into newer forms. This process is known as macroevolution. 에볼루션코리아 of new species is often a result of changes in the environment, which makes certain resources available or creates new environmental problems. The evolution 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 sense it is possible to define evolution as any change in the character of living organisms over time. The change could be subtle, such as the development of a new color or a dramatic change, such as the formation of an organ. Scientists who believe in evolution theory generally agree that genetic changes are crucial in the process of generating evolution. They also agree that the process of evolution happens over a long period of time, usually millions of years. They differ in the importance of various factors that may speed up or slow down the process. For example the role of sexual selection, environmental pressures, and mutation bias. Despite these differences, the majority of scientists believe that evolution is happening and the evidence to prove this is overwhelming. What is the Evidence of Evolution? Since Darwin's time, scientists have gathered evidence that supports his theory of evolution. A portion of this evidence comes from fossils, which reveal the changing traits of organisms through time. Other evidence is found in the similarities between living organisms, embryology, biogeography, genetics and comparative anatomy. The evolutionary tree is the most effective method of proving evolution. It shows how species are closely related. Another way to prove it is homologous structures, which have similar structure in different species but perform distinct functions such as the wings of birds and bats. Evolution is evident in the way that various species adapt and evolve to similar environments. For example, arctic foxes and ptarmigans develop white fur coats that blend into snow and ice. This is a kind of convergent evolutionary process which suggests that the species have shared ancestral ancestors. Another source of evidence is vestigial structures, which are unusable organs that may have served a function in a distant ancestor. For instance, the human appendix is remnants of an earlier organ that was used to digest food. Natural selection causes these structures to shrink as they are no longer used. Scientists have also collected other evidence for evolution through observation and experimentation. Evidence for evolution is grouped into six categories: directly observed small-scale changes in biogeographic distribution as well as comparative anatomy, fossil record, classification and genetics. Each of these categories provides compelling evidence for the evolution of life. While 에볼루션 바카라사이트 are misinformed about the theory of evolution it is an established fact. It is not a theory, but a significant collection of evidence built on years of observation. Scientists continue to gather and analyze new data to better understand the arc of the Earth's life regardless of whether or not people believe in the theory of evolution or not. This information will aid scientists to understand how to avoid future global catastrophes and how to make the most of our planet's resources. This information will also help us better meet the needs and wants of all the people living on this planet.