Biology, 21.10.2020 01:01 1963038660
Peter and Rosemary Grant conducted a 25 year study of the medium ground finch on Daphne Major Island in the Galapagos. They observed and recorded data that clearly
showed a shift in the average population beak size to a shorter beak size being more prominent after periods of severe droughts occurring from 1976-1978 and again in
1981-1982. This example of the change in beak depth demonstrates -
Group of answer choices
directional natural selection.
that evolution occurs so slowly that it is not possible to determine if the change has happened in less than a million years.
the environment in the Galapagos Islands has always favored bigger and bigger beaks in the medium ground finch.
disruptive natural selection.
Answers: 2
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Peter and Rosemary Grant conducted a 25 year study of the medium ground finch on Daphne Major Island...
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