Finch in a Pinch Lab Essay

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Finch in a Pinch Lab Problem Statement As scientists, we have come to this island to observe the evolution of finches when forced into an unfamiliar habitat with a changing food supply. Hypothesis We believe our finch, Pherous robustus, will have a good chance at survival because its beak will allow for the finch to grasp many different seed shapes and sizes. Conclusion During our first 5 years, corn grew well on the island. Our finch population steadily increased during this time period. Our finch was very well adapted to eating the corn because it was very easy for our finch to pick up. During the next five years there was a drought and only block plants grew. Our finch population steadily decreased during this…show more content…
Data Table Population Per Year Specie 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pherous robustus 153 157 167 170 172 164 155 149 146 141 140 140 140 137 136 139 143 146 149 152 Tweezeris bentails 149 146 146 146 145 151 150 157 162 166 161 172 172 174 172 169 164 172 177 178 Plierous normalis 154 158 166 183 181 187 188 193 196 202 202 205 205 206 211 215 220 230 240 247 Tweeseris pointus 155 156 165 172 178 177 180 181 181 179 184 192 192 193 200 202 204 201 208 212 Tosserus saladis 143 141 142 138 136 154 164 177 191 203 195 179 179 168 157 156 164 163 165 163 Summary All of the finches studied in this experiment originated on the same island. On this island there was diversified food success, allowing natural selection to take place and create separate species to fill different niches on the island. When the natural disaster occurred the finches were forced to migrate to another island where the conditions were not as favorable. The finches that were once separated by clines and food sources are now competing for survival. The adaptations that the finches evolved on the original island made some finches more successful at food acquisition on the new island. Due to allopatric speciation the isolated population began to deviate form the parent population because of the founder effect and is was less likely to gene flow. The isolated finch population began to diverge

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