1. Darwin understood that variations in the finch species pointed towards the idea that variation is the origin of evolution. Peter Boag continued to work tentatively alongside the Grants by extracting blood samples and DNA from the finches in his lab, then giving the Grants the data he would find. Boag and Hans Gelter have been running these various DNA tests on the finches provided by the Grants and hope to find the finch that created the different variations of finches along the Galapagos Islands. Darwin used the animals and birds he found in the Galapagos as a kind of reassurance that Lyell's "Principles of Geology" theories correlated to his own research and must have been true. Although Lyell's "Principles of Geology" argued against any
