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Beak Natural Selection

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This experiment was conducted with the aim of modelling the process of natural selection as it relates to favourable characteristics within a species. This experiment sought to model, in particular, the effect of physical characteristics on a predator’s ability to catch their prey, thus affecting their survival rate and subsequent reproductive success. The variation in this experiment was the predator’s “beak” shape while the “prey” was kept consistent throughout this experiment.
The results of this experiment supported the proposed hypothesis as the tong “beak” was the tool that was most efficient at collecting the grains of rice. This hypothesis was based on the assumption that a tool of a larger size would be able to grasp the most rice …show more content…

All other variables were controlled in order to ensure the trials were kept consistent, minimising the occurrence of any unusual results. This was reflected as the results of this experiment were consistent and indicated a trend, with no obvious outliers observed.
Each method of collecting the rice grains was repeated three times in order to ensure this experiment was reliable. Repeating the experiment more times would have yielded a more accurate result however, due to the time constraints this was not possible.
Despite the validity and reliability of this experiment, there were a number of factors which affected the experiment’s accuracy; the main concern being human error. The method used to count the grains involved the person conducting the experiment counting each individual grain. Though this did not pose any issues for the tweezer and peg “beaks”, it took an extremely long time to count the mass of rice grains collected by the clip and tong “beaks” (both of which exceeded 500 grains each trial). As a result of this, the subject inevitably began to anticipate having to count a large amount of rice grains, affecting their collection speed. Furthermore, the experiment relied on speed which the subject was able to collect and transfer the grains of rice in the allocated 30 seconds, making it susceptible to human

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