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Natural Selection Lab Report

799 Words4 Pages

Introduction The purpose of the lab was to investigate natural selection, and the result of variations being unfit for the environment. As a species, there are many genetic similarities between humans, but each individual is different based on the DNA and alleles they have inherited from their parents. For instance, some people may have light hair, whereas others have dark hair. Eye color also ranges the most common colors being blue, brown, green, and/or hazel. Height also creates variety among individuals, whether a person is tall, short, or average. There are many aesthetic differences among our species, but 99.99% of DNA found in humans is the same around the world (Stanford University). Differences in a population do make some individuals better at some things while not well suited for others. For …show more content…

Whereas a person shorter than the norm, would be well suited in areas of gymnastics and equestrian activities. Furthermore, genes passed on that assist in determining weight and body build can make some athletes more fit for sports than others. For example, a stocky individual be better at shot put, compared to a tall and lanky person that would be appropriate for long distance running. However, the ability to perform sports well isn’t always related to inherited traits such as height and/or weight. In the lab, this was exemplified in the varying sizes of the beans, such as the grains of rice versus kidney beans. A grain of rice is much smaller compared to a kidney bean, making it not well suited for a bowl with holes (the environmental model in the experiment). The rice was ‘unfit’ for the environment, so it died off. Whereas, the kidney bean thrived and reproduced. If food was kept 10 feet off the ground and access to it was limited unless you were tall enough, people that were too short to reach it would slowly fade away in the population. Only tall people would have the ability to reach the food and eat, thus individuals unable to attain food

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