The Evolution Site
The theory of natural selection as the basis of evolution is the unifying force in modern biology. It brings together disciplines like microbiology, palaeontology, genetics and palaeontology.
However the study of evolution is often controversial, and the resulting misinformation can confuse people about the fundamentals of evolution. This Web site helps clarify 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 caused by natural selection, which increases the number of organisms that possess beneficial traits that enable them to live and reproduce in a particular environment. These organisms produce more offspring as a result of their positive traits. This could lead to a genetic mutation that may eventually lead to the creation of new species.
에볼루션 코리아 , is often associated with "survival-of-the most fittest" which implies that individuals who are more adjusted to certain conditions will have a distinct advantage over those who are less well-adapted. This is only one of the many ways that evolution can happen.
Another way that the term "evolution" is used is to suggest that a species will invariably move from one state to the next one. This type of view of evolution could be referred to as anagenetic, or cladogenesis. This theory is not supported by the definition of evolution that is scientifically accepted. The theory of evolution that is based on science change is based on changes that occur in populations over time. These changes are caused by mutations that result from natural selection and genomic variation.
Some scientists, including the great Charles Darwin, advocated this theory of evolution. Alfred Russel Wallace who developed the macroevolution theory believed that this was the only way in which the higher living forms could have evolved.
A concept must be able stand up to rigorous tests and evidence to be considered a theory. Evolution has stood the test of time and has been backed by countless scientific disciplines from geology to biology the sciences of astronomy to chemistry. Evolution is the foundation of science and is supported by a majority of scientists around the world. Many people are misinformed about the nature of the 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 a variety of well-established observations: that more offspring are often produced than can possibly survive and that individuals differ from one another in their physical characteristics (phenotype) and that various traits have different rates of reproduction and survival and can be passed down to future generations. These observations are supported by a growing amount of evidence from molecular biology, palaeontology climatology functional morphology geology.
Charles Darwin and Alfred Russel Wallace independently conceived the theory of evolution based on selection in the middle of the 19th century as an explanation why organisms are able to adapt to their biological and physical environments. It is today the most supported and widely-tested theory in all of science. Its predictions were proven by the evidence that, for instance, more complex organisms have less genetic mutations. Additionally the more successful an organism is at surviving and reproducing in its ability to reproduce, the more likely it is to pass its genes to the next generation.
Some people oppose evolution because they believe it implies that there is no reason to life. However, many scientists who are also religious believers such as the renowned Cambridge Palaeontologist Simon Conway Morris, believe that evolution is not only compatible with belief in God but can be enhanced by it (BioLogos 2014).
Many highly skilled evolutionary biologists have been involved in the development and testing the theory of evolution, which includes several highly respected evangelical Christian leaders. Many of these scientists contributed to the understanding a broad range of phenomena, including phylogenetics and genomics, as well as the formation and function of fossils.
The word "theory" is often used to refer to a guess or speculation but in reality it refers to a scientific hypothesis that has been rigorously developed and tested over time. Scientists test hypotheses by repeating the experiments or observations that led them to them. Thus, the theory of evolution has been repeatedly tested out, as have the related theories of Copernican, germ and atomic theory.
What is 에볼루션코리아 of Evolution?
The process of evolution is the gradual change over time in the ratio of genetically distinct individuals within a particular species. This change is a result of natural selection, which favors individuals who are more adapted to their environment. The better-adapted individuals have a better chance of survival and reproduction. As more of these individuals survive and reproduce, their genes are more prevalent in the population. This is often called "survival of the fittest."
According to the theory of evolution the mutations that result in genetic variation are the basic material of evolutionary change. These mutations can occur randomly or be influenced by the environment. When mutations are random, the frequency of the resultant alleles could differ from generation to generation. However, when the mutation is beneficial it can increase the frequency of the allele, causing it to spread through the population.
Changes in the frequency of alleles can result in new species as time passes. The new species will then grow and evolve into new forms. This is known as macroevolution. The formation of an entirely new species is typically caused by changes in the environment which provide certain types of resources available or cause new environmental challenges. The evolution of finches in Galapagos Islands, for example, is due to the availability of fresh food and the need to defend themselves against predators.
In a larger sense it is possible to define evolution as any change in the nature of living organisms over time. The change could be subtle, like the development of new colors or a dramatic change, such as the formation of an organ.
Scientists who believe in evolution theory generally agree that genetic changes are important in generating evolution. They also agree that the process of evolution takes place over a long period of time, usually millions of years. They differ on the importance of various factors that may speed up or slow down this process. For example the role of sexual selection, environmental pressures and mutation bias. Despite these differences, most scientists believe that evolution is happening and the evidence to prove this is overwhelming.
What is the Evidence of Evolution?
In the decades since Darwin's time, scientists have gathered evidence that supports Darwin's theory of evolution. Some of this evidence comes from fossils which show the changing characteristics of living organisms over time. Similarities between living organisms as well as embryology, biogeography and genetics are evidence.
The main proof of evolution is in the evolutionary tree, which demonstrates how different species are related. Homologous structures are another evidence. They have a similar structure but perform different functions in different species, such as the wings of a bird or bat. The fact that different species develop and adapt to a similar environment is also evidence of evolution. For instance, arctic-foxes and ptarmigans have seasonal white pelts to blend into snow and ice. This is a kind of convergent evolution that suggests that the species has common ancestral ancestors.
Another source of evidence is vestigial structures, which are unusable organs that could have served a function in a distant ancestor. For instance the human appendix may be remnants of an earlier organ that served to digest food. Natural selection causes the structures to shrink when they are no longer utilized.
Scientists have also collected evidence for evolution by observing and experimenting. The evidence for evolution can be classified into six distinct categories: directly observable changes at a small scale biogeographic distributions, comparative anatomy fossil records and genetics. Each of these provides compelling evidence that the evolution of life has occurred.
Although many people have misconceptions about the theory of evolution, it is a scientific fact. It isn't just a theory; it is a potent collection of decades of observation and accumulated data that has been tested and proven. Scientists continue to gather and analyze new data to better understand the evolution of Earth's evolution regardless of whether or not people believe in the theory of evolution or not. This information will help scientists to understand how to avoid future global catastrophes and also how to make the most of our planet's resources. This information will also allow us to better meet the needs and wants of the people living on this planet.