genetic drift
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Microevolution is not part of macroevolution. Microevolution involves small-scale changes within a species over a shorter period of time, while macroevolution involves larger scale changes that lead to the formation of new species over a longer period of time.
The six patterns of macroevolution are stasis, gradualism, punctuated equilibrium, adaptive radiation, convergent evolution, and extinction.
Speciation is an example of macroevolution. The slow transition of land tetrapods to whales, the transition of small, many toed creatures into horses. These are not linear so much as branching progressions with the occasional dead end. Darwin's finches are a modern example of macroevolution by adaptive radiation.speciationBirds are reptiles.
An example of macroevolution is the evolution of whales from land-dwelling mammals to fully aquatic creatures over millions of years. This involves significant genetic and morphological changes at the species level, resulting in new species with distinct characteristics.
Microevolution refers to small changes in gene frequency within a population over a short period, while macroevolution involves larger scale changes resulting in the formation of new species over long periods. The two are connected, as microevolutionary processes, such as genetic mutations and natural selection, can lead to accumulation of changes that drive macroevolutionary patterns seen in the history of life on Earth. However, the exact relationship and mechanisms linking micro- and macroevolution are still under scientific investigation.
Darwin's findings, such as natural selection, provide evidence for microevolution, which involves changes within a species over time. However, they do not offer direct evidence for macroevolution, which involves the formation of new species or higher taxa over long periods. Macroevolution typically requires additional mechanisms, like genetic mutations and genetic drift, to account for larger-scale changes.