Hardy-Weinberg Theory Research Paper

1082 Words 5 Pages
Name: Desire Salazar Date: 12/15/17 Period: Pre-AP Biology 5th
Title: Population Genetics and Evolution
Problem: How does the Hardy-Weinberg law provide evidence of evolution?
Background Information: The lab will determine how the Hardy-Weinberg law provides evidence of evolution in a population. A population is “a group of organisms of one species that interbreed and live in the same place at the same time” (Biology Online). In each population, are three key elements: size, density, and dispersion. In a population, size is extremely important because it determines its ability to reproduce. If the population is too small, then the community living there will most likely not be able to reproduce very well. Population density is the amount of
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The final key element is distribution. Distribution is how individuals are arranged accordingly in their population. This may impact the overall population, given that how they’re arranged affects how they live within each other. These three key elements are essential to the Hardy-Weinberg Principle. The Hardy-Weinberg Principle states, “Allele and genotype frequencies in a population will remain constant” in each generation if evolutionary influences are not present. The Hardy-Weinberg Principle can be applied to a population through evolutionary forces such as mutation, migration, non-random mating, genetic drift, and natural selection. The equilibrium determines gene and allele frequency ratios by using the Hardy-Weinberg equation, p^2+2pq+p^2=1. The equation can factor in evolutionary influences, for example, in some populations, people who are recessive for a particular trait have an advantage. In one case, the Sickle Cell Anemia disease “makes people who carry it resistant to malaria, a serious illness carried by mosquitos” (Learn. Genetics). Another evolutionary influence is genetic drift, genetic drift occurs when allele frequencies change within a population. An example …show more content…
The data collected showed that starting p and q values as .5 and .5 for all cases. The final p and q values were .45 and.55 for case 1, .78 and .22 for case 2, and finally .44 and .56 for case 3. The data that was collected was then put in the Hardy-Weinberg equation, p^2+2pq+q^2=1. The hypothesis was proven to be correct because every case was plugged into the Hardy-Weinberg equation and equaled one, which is

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