Anthro Lab Report #2.docx - Anth 105 Human Species u2013...

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Anth. 105 Human Species – Lab 2 Report November 3, 2019 Introduction When it comes to evolution, there are many factors that comes into play when regarding to changes within a population. Evolution involves the changes in alleles in a population over time, and this includes the spread of new alleles or already existing alleles becoming more or less prominent. Determining factors in evolution are the four mechanisms in evolution; mutations, natural selection, genetic drift and gene flow. Mutations is a change in DNA which produces new variations, and it is a source of new alleles in a population, resulting in an increased allele diversity. Natural selection are the changes in allele frequencies in a population due to differential reproductive successes, and it works for particular alleles by increasing their allele frequencies. Genetic drift is changes in allele frequencies produced by random factors, and this also decreases the allele frequencies within a population. Lastly, genetic flow is the exchange of genes between populations, and this increases the allele diversity in a population. In this project, we investigated how factors such as gene flow and genetic drift can further affect allele loss through a population genetics simulation program. Using this computer simulation, we were able to alter the environmental conditions such as fitness rates, population sizes, mutation rates, migration rates, bottleneck rates and such. In this lab report, I will be focusing on genetic drift and gene flow effects on allele frequencies in a population of white and brown furred rabbits in a snowy climate.

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