Reading Assignment 1 Questions

Reading Assignment 1 Questions - Bryan Botti BioEE 278...

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Bryan Botti BioEE 278 Section 10 Billie Gould Reading Assignment Questions Assignment 1: 1. What happened to the seed supply on Daphne Island during the drought of 1977? The seed supply on Daphne Island dramatically decreased in number during the 1977 drought. Since there was a scarcity of seeds, the small and soft ones that were a staple in the finch diet were quickly consumed, and the large and hard seeds became more commonly found. 2. How did the beak sizes of birds born the year after the 1977 drought differ from those of birds born the year before? The birds born the year after the drought had, on average, a deeper beak than those born the year before. 3. Why didn’t beak size follow the same pattern after the drought of 2003 and 2004 as it did after the drought of 1977? During the drought of 2003 and 2004, the medium ground finches had a new competitor: a population of large ground finches, Geospiza magnirostris. These large ground finches used their substantially bigger beaks to eat the larger and harder seeds that the deep-beaked ground finches had eaten in the 1977 drought. Thus, the medium
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  • Fall '07
  • Darwin's finches, TTX, Newt, Large Ground-finch

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