Rewrite Defintion Of Microevolution And Macroevolution With Citations And Sources

Microevolution refers to the small-scale changes in gene frequencies within a single population, while macroevolution describes larger evolutionary changes that transcend species boundaries and result in the origin of new types of organisms. These grand transformations, such as the development of mammals and flowering plants, fall under the category of macroevolution. In contrast, microevolution typically occurs within a species and brings about changes at the species level. This change in gene frequencies over time is driven by processes like mutation, genetic drift, gene flow, and natural selection. From a population genetics perspective, microevolution can be observed in just a few generations.

Microevolution involves small-scale changes in gene frequencies within a single population, occurring over relatively short periods (Coyne & Orr, 2004). This can include alterations in traits and adaptations that transpire within a species. On the other hand, macroevolution refers to the broader changes that occur over extended periods, leading to the emergence of entirely new species or higher taxonomic groups (Eldredge & Gould, 1972). These changes encompass the evolution of new body plans, adaptive radiations, and speciation events that shape the diversity of life on Earth.

Evolution at different scales: micro to macro - Understanding ...What is the difference between microevolution and macroevolution ...

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