Fruit Fly Lab Report

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This experiment is concentrated on two types of Drosophila melanogaster flies: wildtype and the vestigial. The vestigial flies have small, shriveled wings caused by the mutation on the second chromosome. This mutation is recessive, so in order for the flies to display shriveled wings they must carry the mutation on both copies of the chromosome (Franklin, 2014). The reason why our experiment is focused on the wings of these flies is because Drosophila melanogaster males perform mating dances that involve them extending their wings and vibrating rapidly. Presumably, the successfulness a male has in mating will be in large contributed to the types of wing a fruit fly has and its ability to perform an attractive mating dance. While examining the overall change in evolution, it is necessary to …show more content…
This whole process takes about 2 weeks, and our data will show five generations. The purpose of this experiment is to identify how different selective forces will influence the evolution of the flies (Franklin, 2014). Evolution is characterized by a change in allele frequencies in a population over time. Sexual and natural selection drive evolution to occur. This can be shown by the conditions of our null hypothesis, the Hardy-Weinberg equation. In it’s conditions it states that random must be mating and there must be no natural selection in order for evolution not to occur. Sexual selection as well as natural selection has a large role in our experiment. Sexual selection is when one sex has a preference for certain characteristics in another sex. Natural selection is when an organism has better means of survival and reproductive success as a result of being better suited to their environment. Both natural selection and sexual selection will contribute to the relative fitness of an individual within their environment. What this means is that the phenotype has a better chance of survival and contributing their phenotype to the population, in comparison to other types of

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