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The Evolution Site The concept of natural selection as the basis of evolution is the central force in modern biology. It combines disciplines like microbiology, palaeontology, and genetics. The study of evolution may be controversial and the misinformation that comes from it can lead to confusion about the fundamentals of evolution. This site explains the fundamental 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 amount of organisms that possess beneficial traits that allow them to survive and reproduce in a specific environment. As a result, these organisms have more offspring than those who don't have these beneficial traits. This results in an alteration in genetics that could eventually lead to the development of new species. The term “evolution” is often associated with “survival-of-the best” which implies that individuals who are more adjusted to certain conditions will have an advantage over those who are less well adapted. In reality it is only one of the many different ways in which evolution can occur. Another way of using the word evolution is to suggest that a species can change from one state to the next. This kind of view can be referred to as anagenetic or cladogenesis. This view is not supported by the definition of evolution that is scientifically accepted. Instead the scientific theory of evolution is based on the changes that take place within populations over time, and these changes are the result of genetic mutations and natural selection. Charles Darwin was one of the scientists who backed this theory. Alfred Russel Wallace who developed the macroevolution theory believed this was the only way in which the higher forms of living could have evolved. For a concept to be called a theory, it must be able to stand up to rigorous testing and evidence. Evolution has stood the test of time, and has been backed by numerous scientific disciplines ranging from geology to biology the sciences of astronomy to chemistry. In fact evolution is considered to be one of the foundations of science today and is backed by the majority of scientists worldwide. However, many people have misconceptions about the theory of evolution, particularly how it relates to religion. What is the Theory of Evolution (Evolutionary Theory)? Evolution is an explanation in science of how living things change with time. It is based on a variety of well-established observations: that more offspring are often produced than can possibly survive; that individuals differ from each other in their physical characteristics (phenotype) and that distinct traits confer varying rates of survival and reproduction; and that traits can be passed on to the next generation. These observations are supported by a growing amount of evidence derived from molecular biology, palaeontology and climatology functional geology, morphology. Charles Darwin and Alfred Russel Wallace independently developed the theory of evolution by selection in the mid-19th century as a way to explain how organisms adapt to their biological and physical environments. It is currently the most well-supported and most extensively tested theory in the field of science. Its predictions were proven by the evidence, for example that more complex organisms have less genetic mutations. The more successful an organism becomes in terms of its longevity and reproducing, the more likely it will transfer its genes to the next generation. Some people oppose evolution because they believe that it implies there is no purpose for life. Many scientists who are religious believers, like the Cambridge palaeontologist Simon Conway Morris (BioLogos, 2014) believe that evolution is compatible with faith in God and is even enhanced by it. Many highly qualified evolutionary biologists have been involved in constructing and testing the theory of evolution, including some respected evangelical Christian leaders. Many of these researchers contributed to the understanding of a vast array of phenomena, such as phylogenetics and genomics, as well as the formation and function fossils. The word “theory” is sometimes used to refer to an assumption or speculation but in reality it refers to a scientific hypothesis that has been thoroughly tested and refined over time. Scientists test hypotheses through repeating the experiments or observations that led them to their conclusions. The theory of evolution has been repeatedly tested out and so have the theories of Copernican, germ theory, and atomic 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 higher chances of reproduction and survival. As more of these people survive and reproduce, their genes are more prevalent in the general population. 에볼루션 바카라사이트 is often called “survival of the strongest.” According to 에볼루션 바카라사이트 of evolution the mutations that cause genomic variation are the raw basis for evolutionary change. These mutations may occur randomly or be affected by the environment. If mutations occur in a random manner and the frequencies of alleles will vary from generation to generation. However, when an alteration is beneficial it increases the frequency of the allele, which causes it to spread across the population. As time passes, these changes in the frequencies of alleles can lead to the formation of new species. 에볼루션 may develop further and evolve into newer forms. This is known as macroevolution. The formation of new species is often due to changes in the environment, which makes certain resources available or creates new environmental issues. For example, the evolution of finches in the Galapagos Islands is a result of the abundance of foods and the need to defend themselves from predators. In a larger sense, evolution is defined as 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 coloration or dramatic, like the development of an organ. Scientists who accept the theory of evolution generally recognize the importance of genetic changes in the process of generating evolution. They also acknowledge that the process of evolution occurs over a long period of time, often millions of years. However, they differ on the role of different factors in speeding or slowing the process, including the role of environmental pressures, sexual selection and mutation bias. Despite these differences, the majority of scientists are still convinced that evolution is real and that the evidence to prove it is overwhelming. What is the Evidence of Evolution? Throughout the years since Darwin's time, scientists have gathered evidence to support his theory of evolution. This evidence is gathered 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 evolutionary tree is the best method of proving evolution. It shows how different species are closely related. Another way to prove it is homologous structures, which have a similar structure in different species, but have distinct functions like the wings of birds and bats. Evolution is evident in that various species adapt and evolve to similar environments. For example, arctic foxes and ptarmigans develop seasonal white pelts to blend in with snow and ice. This is a kind of convergent evolutionary mechanism, which suggests the species shared ancestors. Vestigial structures are another piece of evidence. These are a part of an organism that could serve a function in the past. 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 gathered other evidence of evolution through observation and experimentation. The evidence for evolution can be grouped into six categories: directly observed small-scale changes in biogeographic distribution as well as comparative anatomy, fossil record, genetics, and classification. Each of these provides compelling evidence that evolution of life has occurred. Many people have misconceptions about the theory of evolution. However, it's an actual fact. It is not only a theory, it is a mighty collection of years of observation and accumulated data that has been tested and proven. Scientists continue to gather and study new information to better understand the evolution of Earth's existence, regardless of whether people believe in the theory of evolution or not. This knowledge will allow scientists to better understand how to prevent future global catastrophes, and how best to make use of the resources on our planet. This information will also help us better serve the needs and wants of the people living on this planet.