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Natural Selection Lab Report

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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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Materials: 1. Genetic code chart 2. The Making of the Fittest: Natural Selection and Adaption Student Handout

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Paragraph 1: Introduction - explain your lab. The lab that I chose to do was the “McGraw Hill Higher Education: Natural Selection - Virtual Lab.” I chose this lab because it was the one that most interested me, as I liked the format of the virtual lab. In this lab, I was able to manipulate both the environment and the allele frequency in order to record and investigate the generational breeding patterns of a group of organisms.

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Due October 19th, 2015 Erin Gibbs: 200270053 Dr. Andrew Cameron Bio 222 Written Assignment 1 1. Health officials realized that the mysterious illness was not caused by a bacterium because the pathogen would be identified quickly in comparison to a virus, which is more complicated (CBC, 2013). 2. It was hard to identify the infectious agent because SARS presented as flu-like symptoms with a rapid onset and is similar to the common flu (CBC, 2013). People who had other underlying health problems made it difficult to identify symptoms of SARS because it made it hard to differentiate (CDC, 2013).

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The group hypothesized that if worms in a bottle had dirt, compost, oxygen, and a good environment they would survive, reproduce, and improve soil. The groups hypothesis was partially supported by this experiment. For one, most worms did not survive. By the end of the experiment 5 worms remained although the group started out with 27.

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2a. If sunlight were to disappear almost completely, it would leave lasting effects on many organisms such as an earthworm, a shark, a maple tree, a saguaro cactus, or a teenager. While looking at an earth worm, the short term effects would be beginning to see more of the species during the day. Earthworms are nocturnal, so they live beneath the surface when it is daylight and come out once the sun goes down. Because of this in the long run, the earthworm species would eventually become overpopulated; they would be above the surface more, so they would have more time to reproduce.

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Furthermore a study by the Genetic Society of America, weakens the myth that race is caused by genetic differences by stating that there is a “larger Genetic Differences Within Africans Than Between Africans and Eurasians” meaning “blacks” are more genetically similar to “whites”

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Too tall, too strong, too smart, too beautiful. The randomness of human nature creates a wide range of unique traits in many. It may appear unkind or unfair by favoring some and slighting others. It may even foster jealousy and resentment. Despite this, the uniqueness of nature and the endowments of some are what allow society as a whole to advance.

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Introduction: The athlete that is being tested is 18 years old and he has been training for 4 years, currently playing at the NCAA Division 1 American football. This athlete has got 179.2cm height and a body mass of 82.4kg, which makes his physical attributes relatively good as a wide receiver, as they need to be lighter and are normally lighter than the rest of the athletes in an American football team, The wide receiver is charged with the responsibility to receive passes from other athletes, this will in turn make him an athlete that needs to be light in order to outrun the other athletes, Robbins (2011) indicates that based on sprinting tests done in his research wide receivers due to their lighter weight are able to perform better at 9.1m, 18.3m, 36.6m sprints having the best performance out of every athlete measured in the team, for the exception of the cornerback. This happens because cornerbacks are responsible for preventing receptions therefor making them a better athlete in order to block the wide receivers. According to Robbins and Young (2012)

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Introduction Predation is a biological interaction between two organisms of different species in a community in which one acts as a predator and captures and feeds on the other, the prey. Predator-prey relationships keep animal populations in balance. When prey populations increase more food is available for predators, and they increase in number as well. An increase in predators triggers a decrease in prey populations. As prey populations decrease predator populations soon follow as their food supply diminishes.

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According to Highfield Roger (2002) “All humans are 99.9 per cent identical and, of that tiny 0.1 per cent difference, 94 per cent of the variation is among individuals from the same populations and only six per cent between individuals from different

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Introduction The theory of evolution has been discussed, evaluated, and researched many times since the theory was first brought to light. Darwin’s theory of evolution is said to be divided into two parts, common decent and natural selection (Bouzat, 2014). Many research papers agreeing with Darwin’s theory comment on the diversity of a species and how they have descended from one common ancestor. Natural selection is a process in which species that are better adapted to the environment tend to survive and reproduce (Dictonary.com).

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