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arroba
Forty years ago biologists Peter and Rosemary Grant began an ongoing study of the different finch species on the Galápagos Islands. They gathered valuable data and during drought years they observed the finches adapt to the environmental challenges. In particular, the population of medium ground finches, Geospiza fortis, shifted toward a larger beak. This was because the drought left smaller seeds in scarce supply, and so those G. fortis with smaller beaks died off. These initial observations were followed with detailed studies of the changes that took place at the molecular level. The latest such study, published in February of this year, describes how a particular protein affects the embryonic development of the finch’s beak. All of this makes for a good case study in adaptation. Unfortunately, it also is a good case study in the misrepresentation of science by evolutionists. Read more