A-Macroevolution Results from genetic drift natural selection, mutation, and migration, Refers to the evolution of new species, Refers to changes in allele frequencies within a population.
B- Microevolution Includes the history of life on Earth, Within a population of butterflies the percentage of blue butterflies begin to outnumber the percentage of yellow buttes Reset.
The two extremes here serve as traditional illustrations of macro- and micro-evolution. While macroevolution occurs on a scale that extends beyond the bounds of a single species, microevolution occurs on a tiny scale (inside a single population). Changes in a single population's gene pool are the subject of microevolution. Macroevolution takes into account the overall trend of evolutionary change over extended periods of time and takes the emergence of new groups into account.
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