Essay on Evolution of the Finch on Darwin & Wallace Island

832 WordsJan 6, 20134 Pages
Evolution of the finch on Darwin & Wallace Island Wendy Chavez Principals of Biology/BIO 101 12/10/2012 Michael Erickson University of Phoenix Evolution of the finch on Darwin & Wallace Island A small population of finches have been discovered on Darwin and Wallace Island. The population is 200 finches at Darwin Island, and 200 finches at Wallace Island. The year is 1997, and scientist measured the finch beak size from both Darwin and Wallace Island. The finches from both island, showed an average beak size of 12.0 mm. Precipitation on both Darwin and Wallace island average 20.0 cm. Scientists want to determine if precipitation was to increase, would the finch beak increase in size? In this lab study, scientist will…show more content…
On the 2nd experiment, the scientist decided to change the independent variable. The year would continue to start in 1997. The size of the finch beak will remain 12.00 mm. Precipitation will be changed to 9.0 cm for Darwin Island, and 5.0 cm for Wallace Island. If precipitation went down, the size of the finch beak would increase. In 2096, the beak size for the Darwin Island finch was 18.59 mm, while the beak size for the Wallace island finch increase to 18.18 mm. The population increased to 351 for the Darwin Island finch, and 444 for the Wallace Island finch. On the 3rd experiment for Darwin Island, the independent variable was increased to 78.cm, while the independent variable for Wallace Island increased to 68. cm. The precipitation increase at Darwin and Wallace Island, indicated a decrease in beak size. The finch beak size in 2096, was measured at 10.72 mm. The decrease of the finch beaks at Wallace island measured at 11.61 mm. The population at Darwin Island increased to 682, while the finch population at Wallace Island increased to 660. Once the scientist finished analyzing the data collected they were able to determine if their hypothesis was correct or incorrect. The final results of the scientific hypothesis was proved to be incorrect. The scientist believed that if the precipitation was to increase at Darwin and Wallace Island, the finch beak would enlarge in size. The data collected determined that the increase of precipitation, made
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