Similarly natural selection may favor white bunnies

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predators. Similarly, natural selection may favor white bunnies in snowy environments for the same reason. In this project, we investigated the evolutionary force of natural selection. We did so by means of computer simulators. The computer simulator that I chose to use was the evolution lab simulation from biologyinmotion.com. In this simulation, there are 20 blue organisms with grabbers on the top of their heads for catching prey to satisfy hunger. These grabbers cannot have less than 1 segment and cannot exceed 4 segments. After eating, these organisms immediately reproduce. Accordingly, in order to make room for the new offspring, some of the organisms must die. The organisms that die are the ones that are the hungriest. The grabber is what evolves in this simulation. Also, the cause of variation in this simulation is mutation. We assume that the
offspring will inherit their parent’s exact phenotype (grabber length) if mutation is not present. The only two environmental settings in this simulation are selection and strength. My guess is that as the selection strength increases the mean phenotype. Also, as mutation rate increases the mean phenotype will decrease. For this project, I chose to examine the effect of mutation rate on the population over time. I will see whether decreasing it or increasing will make a significant change in the allele frequencies in this population. Predictions 1. Simulation 1/Default: The phenotype 4 will always be the most prevalent in this population 2. Simulation 2: This population will gradually make its way to the phenotype 4 and it will remain that way. 3. Simulation 3: This population will become fixated in the middle of the two phenotypes 3 and 4. Hypothesis 1. Natural selection will favor the mutation the longest grabber (phenotype 4) Methods In this lab, we investigated the effects that the forces of evolution have on populations over time. The forces of evolution that I examined were natural selection and mutation. In order to help me achieve a visual representation of these effects, I used a computer simulation. The computer simulation program that I chose was . Afterwards, I made a hypothesis on how these evolutionary forces would affect allele frequencies in the environmental setting of this simulation. The hypothesis that I made was: “Natural selection will favor the mutation of longest grabber (phenotype 4)”. In this simulation, there is a population of twenty blue organisms with grabbers. They use these grabbers to catch prey and eat for survival. After an organism eats, it immediately procreates. The offspring takes the place of the organism that hasn’t eaten in the longest amount of time. If two organisms are tied as the hungriest in the group, the person who dies is randomly chosen. Understanding how important the grabbers are to the survival of this population, it is to no surprise that the grabbers are what will evolve.

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