lab 2.docx - Anthropology 105 Human Species Lab 2 Report...

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Anthropology. 105 Human Species – Lab 2 Report Sandip Sandhu March 19, 2017 Introduction In Lab 2 we used computer simulation to investigate one of the four forces of evolution. What is evolution? Evolution is the change in genetics structure of a population; (change in allele frequency in a population over time). The four forces of evolution are: mutation, gene flow, genetic drift, and natural selection. Mutation is a random heritable change in a gene or chromosome, resulting from additions, deletions, or substitutions of nitrogen bases in the DNA sequence. Gene flow is the transfer of alleles or genes from one population to another. Genetic drift is variation in the relative frequency of different genotypes in a small population. This means that there may be a chance of disappearance of certain genes as individuals die or if they don’t produce any offspring. Lastly, natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in heritable traits of a population over time. In this project, we investigated how natural selection would play out in nature through a computer stimulation game. The game let us (our group) alter the mutations and let us add

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