Question

In Central and Northern California, the Red-legged Frog (Rana aurora) breeds from January to March. The closely related Yellow-legged Frog (Rana boylii) breeds from late March through May. Based on this information, which of the following is a scientist most likely to observe if these two species of frog are studied for multiple generations?

Answer 1

In this case, both frog species may experience divergent evolution caused by differences in the timing of reproductive activity. Divergent evolution leads to speciation.

Divergent evolution and convergent evolution

Divergent evolution refers to the independent evolution of two closely related species or populations due to differential selection pressures.

Conversely, convergent evolution refers to the parallel evolution of two unrelated taxa that lead to the acquisition of similar traits or characteristics.

Divergent evolution may eventually to the emergence of reproductive isolation barriers and thus induce speciation.

Learn more about divergent evolution here:

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