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divergent evolution
This term describes a biological phenomenon where related species evolve different traits to adapt to different environmental niches. It is the primary mechanism behind adaptive radiation, where a single ancestral lineage splits into a variety of forms. This process is characterized by the development of homologous structures—organs or skeletal elements that, while serving different functions in the current species, share a common evolutionary origin.
In a scientific context, this term is strictly contrasted with convergent evolution, where unrelated species independently evolve similar traits. While divergent evolution emphasizes the splitting of a lineage and the increase in morphological distance between relatives, convergent evolution emphasizes the coming together of unrelated forms due to similar selective pressures.
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Ví dụ
The pentadactyl limb in mammals is a classic example of divergent evolution.
Darwin's finches illustrate divergent evolution through their varied beak shapes.
Wait, so divergent evolution is basically the opposite of convergent evolution?
The fossil record provides clear evidence of divergent evolution in early cetaceans.
I wonder if these two alien species are a result of divergent evolution from a single progenitor.
Divergent evolution occurs when related species adapt to different environmental niches.
The professor explained how divergent evolution leads to the creation of homologous structures.
It is fascinating to see how divergent evolution has shaped the diversity of life on Earth.