Final answer:
Microevolution and macroevolution differ in terms of the scale of evolution - microevolution occurs within populations over short periods, while macroevolution involves the emergence of new species over long periods.
Step-by-step explanation:
The main difference between microevolution and macroevolution from a genetic point of view is that microevolution refers to the evolution of organisms within populations over shorter periods of time, while macroevolution refers to the emergence of new species over longer periods of time.
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