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The Evolution Site The theory of evolution by natural selection is the unifying force of modern biology. It connects disciplines like microbiology, palaeontology, genetics and palaeontology. The study of evolution may be controversial, and the misinformation that comes from it can lead to confusion over its basic concepts. This site clarifies essential concepts. What is Evolution? Modern evolutionary theory is based on the gradual and cumulative changes that take place in populations over time. These changes are the results of natural selection. This is a process which increases the number organisms with beneficial traits, which help them to survive and reproduce in certain environments. They produce more offspring as a result of the positive traits. This can cause a genetic change that may eventually lead to new species. The term “evolution” is usually associated with “survival-of-the fittest” which implies that people who are better adapted to certain environmental conditions will have a distinct advantage over those who are less well adapted. This is just one of many ways in which evolution can occur. Another popular way to use the word evolution is to suggest that species are able to move from one stage to the next. This kind of view can be referred to as anagenetic or cladogenesis. The definition of evolution that scientists have developed does not support this view. The theory of evolution that is based on science change is based on changes that occur in populations over time. These changes are the result mutations that produce natural selection and genomic variation. Charles Darwin was one of the scientists who backed this idea. Others, such as Alfred Russel Wallace, who came up with the macroevolution theory, believed that this was the only way the higher forms of life could be derived from lower forms. For a concept to be referred to as a theory, it must be able to stand up to rigorous tests and evidence. Evolution has stood the test of time, and has been supported in numerous scientific disciplines ranging from biology to geology, chemistry to astronomy. In fact evolution is considered to be one of the foundations of science today and is supported by the vast majority of scientists around the world. Many people are confused about the nature of evolution theory and how it connects with religion. What is the Theory of Evolution? Evolution is the scientific explanation for how living things change over time. It is based on few established facts: that more offspring are produced than can be surviving as individuals differ in their physical characteristics, and that they are able to pass on traits to future generations. These observations are supported by the increasing body of evidence from molecular biology, palaeontology climatology, functional morphology and geology. The theory of evolution through natural selection was conceived independently by Charles Darwin and Alfred Russel Wallace in the late 19th century to provide an explanation for how organisms adapt to their biological and physical environment. It is now the best-supported and most widely tested theory in the field of science. Its predictions were proved by the fact that for instance, more complex organisms have less genetic mutations. The more successful an organism gets in terms of survival and reproducing, the more likely it is to transfer its genes to the next generation. Some people are against evolution because they think it suggests that there is no reason for existence. Many scientists who are religious believers such as 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 developing and testing the theory of evolution, which includes some respected evangelical Christian leaders. Many of these researchers have contributed to the understanding of a vast range of phenomena, such as phylogenetics, genomics, and the formation and purpose of fossils. The term “theory” is often used to refer to a guess or speculation, when in fact it refers to a scientific hypothesis that has been systematically tested and refined over time. Scientists test hypotheses by repeating the experiments or observations that led them to the conclusion. Thus the theory of evolution theory has been repeatedly proven, as have the corresponding theories of Copernican theory as well as atomic theory and germ theory. What is the Process of Evolution? The process of evolution is the gradual change over time in the percentage of genetically distinct individuals within a particular species. This change is a result of natural selection, which favors those who are more adapted to their environment. The individuals who are more adapted have better chances of reproduction and survival. As more of these individuals survive and reproduce their genes are more prevalent within the population. This process is sometimes referred to as “survival for the strongest.” According to the theory of evolution the mutations that cause genomic variation are what triggers evolution. These mutations could occur randomly or under the influence of 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 can increase the frequency of the allele which causes the allele to spread throughout the population. The changes in frequency of alleles could lead to new species as time passes. The new species will grow and evolve into new forms. This process is known as macroevolution. The development of new species is often due to changes in the environment, which make certain resources available or creates new environmental problems. The development of finches in the Galapagos Islands, for example is due to the availability of new foods and the need to defend themselves against predators. In a broader sense the term “evolution” refers to any change that takes place in the nature of organisms over the course of time. This change can be subtle, such as the development of new colors or dramatic, like the development of an organ. Scientists who accept evolution theory generally agree that genetic change is essential in generating evolution. They also acknowledge that the process of evolution occurs over a long period of time, usually millions of years. However, 무료 에볼루션 differ on the importance of different factors in speeding or slowing this process, such as the role of environmental pressures, sexual selection and mutation bias. Despite these differences scientists believe that evolution is happening and that the evidence for this is overwhelming. What is the evidence for evolution? Since Darwin's time scientists have collected evidence to support his theory of evolution. The 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 evidence. The main proof of evolution is in the evolutionary tree, which illustrates how different species are connected. Another evidence source is homologous structures, which have a similar structures in different species but have distinct functions, such as the wings of birds and bats. Evolution is evident in the way that different species adapt and develop to similar environments. For instance, arctic foxes and ptarmigans have white fur coats that blend into snow and ice. This is a kind of convergent evolution, which suggests that the species have common ancestors. Another source of evidence is the existence of vestigial structures. These are unused organs which could serve a purpose in the distant ancestor. The human appendix, for instance is a remnant of an organ that once used to digest food. These structures tend to shrink in size as they are no longer used, a process known as natural selection. Scientists have also gathered evidence for evolution through observation and testing. The evidence for evolution can be grouped into six distinct categories: changes that can be observed at a small scale, biogeographic distributions and comparative anatomies, the fossil record and genetics. Each of these categories provides convincing evidence for the evolution of life. Although many people have misconceptions about the theory of evolution it is a scientific fact. It is not a theory, but rather a powerful collection built on decades of observation. Scientists continue to gather and analyze new data to better understand the history of the Earth's life, 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 of our planet. This information will also help us better meet the needs and wants of the people who live on this planet.