What Is The Definition Of Natural Selection In Biology
Natural selection is a fundamental principle of evolutionary biology that explains how species adapt to their environment over time. It is the process by which organisms with traits that are better suited to their environment are more likely to survive and reproduce, passing on those advantageous traits to their offspring. Over many generations, these beneficial traits become more common in the population, leading to the evolution of new species.
Natural selection operates on the variation that exists within a population. This variation can arise from genetic mutations, environmental factors, or a combination of both. Individuals with traits that are better suited to their environment are more likely to survive and reproduce. For example, in a population of insects, those with thicker fur may be better adapted to a cold climate, while those with lighter fur may be better adapted to a warm climate.
The process of natural selection is gradual and cumulative. Over time, the advantageous traits become more common in the population, while the less advantageous traits become less common. This can lead to significant changes in the population over many generations, resulting in the evolution of new species. For example, over millions of years, natural selection has led to the evolution of humans from our ape-like ancestors.
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