What is the definition of evolution in science

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Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years, a process that includes all animals and plants. Evolution is one of the most important concepts in science, and it has been the subject of intense study and debate since it was first proposed by Charles Darwin in 1859. In its broadest sense, evolution is the change in the inherited traits of a population over time. Evolution can also be defined more specifically as the change in the frequencies of alleles (variants of a gene) in a population from one generation to the next.

Evolution occurs through a process known as natural selection, in which organisms with certain advantageous traits are more likely to survive and reproduce than those without those traits. Over time, these advantageous traits become more common in the population, and the population evolves. This process has been observed and documented in a variety of species, from bacteria to primates.

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Evolution is not a random process, but is instead driven by the environment. Environmental pressures, such as competition for resources, predation, and climate change, can lead to changes in the traits of a population over time. For example, if a population of animals is subject to predation, those animals with traits that make them better able to escape predators will be more likely to survive and reproduce. Over time, the population will evolve to become better adapted to its environment.

Evolution is a key concept in biology, and is essential for understanding the diversity of life on Earth. It is also an important concept in medicine, as it helps us to understand how diseases evolve and how they can be treated and prevented.

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