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Evolution of the Finch on Darwin and Wallace Island

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A charm of finches was found on Darwin and Wallace Island. There was a small number of this species when they were initially discovered. There were approximately 200 finches in each habitat. A group of scientists made some observation regarding the evolution of the finches depending on the geological climate in their habitats. It was in 1997, when the scientists started to record the measurement of the beak on the islands. They hypothesized that finches will sooner or later have elongated beaks when the water level increases in their habitat. It has been stated in the theory of evolution that species will adapt to the changes of its surrounding for the sake of survival. If it is true then finches will reform its beaks to be able to find food to keep them alive. During the initial data gathering finches showed an average of 12 millimetres beak-size when the islands’ approximate water level was 20 centimetres. As noted earlier, the goal is to determine if the birds will enlarge their beaks under the circumstance of increased water level due to excessive rainfall. After the preliminary data recording the scientists had to wait for the rain and collect new data, specifically beak-size measurement. Apparently, Evolution would not take place in just a subtle amount of time. It has to be observed over the passing years, maybe generations. Numerous scientists assert that the evolution of finches would take place if the precipitation on those islands would remain at 20.0 centimetres for over a century. The mutation of the birds’ beaks is measured as follow; Darwin Island would have finches with 18.5 millimetres beak-size by 2096 while finches on Wallace Island would enlarge to 18.21 millimetres by 2096 as well. It is apparent that the Darwin Island produced finches with longer beak-size and the population is larger than in Wallace Island. Both groups survive but this suggests that more finches survived in Darwin Island grew their beaks faster. The experiment proved that evolution is triggered by the changes of the habitat.

If we will create a hypothesis in reference to the Darwin and Wallace Island it means that if we make observation on the evolution of the finches then it is perceived that we will be getting the same progress. Let us say that there is an Island A. and an Island B. Our record shows that the two islands have the same population of finches which is 240 per island. The average beak-size of the finches on both islands is 16 millimetres. Precipitation on these islands is 27 centimetres which is 7 centimetres deeper than the first example. The beak-size of our finches is 2.0 millimetres smaller compared to the first example. Our main variable will be the smaller beak-size of our finches and we have to observe its mutation in a deeper precipitation. If we will check our experimental results it seems that our experiment will have the same results. We will start the date of observation in 2013 and end at 2014, which is 100 years from the start date to the end date. Let us now simulate time by utilizing our experimental results. The record shows that the Island A. has produced an average beak-size of 20.64 millimetres and finches multiplied to 894. While in Island B the bird enlarged their beaks to 21.11 and reproduced to 951. By just analyzing the data it is obvious that finches with larger beaks managed to live longer reproduce better compared to those that have shorter beaks. This has been proven by the experimental results provided to us from the evolution lab. We have been able to justify the theory of evolution by examining the mutation of finches due to the precipitation in their habitat. It is now clear that species adaptation to its environment is essential to their survival. Evolution can come in different forms and it is dependent to the situation and condition of the species in their natural habitat. Most of the species evolved for the sake of finding food to keep them alive.

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