Population gentics and the Hardy Weinberg Theorm
Population Genetics and the Hardy-Weinberg Theorem When thinking of population genetics there are two key names that mark important moments in the history of science. Darwinian selection, which includes Darwin's four postulations one: stating that individuals within a species will vary, two: stating some variations are passed on to off spring, three: stating more offspring are produced that can survive, and four: stating individuals with the most favorable adaptations are more likely to survive and reproduce (Jones, 200.) Also the idea of Mendelian inheritance, which included the Law of Dominance, the Law of Segregation, and the Law of Independent Assortment. Together these two different theories are the key ideas involved in the birth of population genetics, and in modern times thought of as going hand in hand. However, Mendel and his ideas were very much ignored during the height of Darwin's theories. When Mendel was rediscovered later in the early 20th century, scientists began using terms such as population, gene pool, and allele frequency as a common language linking these two theories together (Vogel, 2002.) The Hardy-Weinberg theorem named after the two scientists that structured the princip
Once my experiment was performed the results were recorded in Table 1 and further seen in graphs A and B. To have a mutation occur, I began with a herd of South African Pygmy Goats. To understand the five conditions of population genetics experimentation is a must. I then recorded and calculated the allele frequencies for the parental (P1) and offspring generations (F1) and (F2) which are shown in table 1. This enabled me to make sure my experiment was only testing mutation and none of the other four conditions. I hypothesized that by disrupting the condition of no mutation and creating a mutation within the allele group, the allele frequencies would begin to vary from the original group. For example if while performing this experiment, there is any other condition of the theorem that is being manipulated at the same time. No selection, this results from the differential reproduction of one phenotype, it also determines the relative share of different genotypes that individuals possess and propagate in a population. To produce two offspring for each couple I flipped a coin (four times for each couple, equaling two offspring) to determine which allele a parent will provide to each off spring Heads equals blue eyes and tails' equals green eyes, but remember that every fourth couple will automatically give the genes which make the offspring homozygous dominate for blue eyes. This proving that by breaking one of the five conditions of the Hardy-Weinberg theorem would result in a disruption in the equilibrium of allelic frequencies. The starting allele frequency for red and white beans (Blue and green eyes) was 50% for both. These pairs are known as my P1 population, or parental generation. The characteristics of organisms are determined by their genetic material (DNA), and random mutations in the DNA can result in slight changes in organisms (Plaisted, 2003. Which stated that by manipulating one of the Hardy-Weinberg conditions, (which was mutation) that you can change the allelic frequencies over different generations.
Common topics in this essay:
F1 F2,
Hardy-Weinberg Theorem,
Methods Materials,
Independent Assortment,
Theorem Introduction,
Pygmy Goats,
hardy-weinberg theorem,
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allele frequencies,
population genetics,
table 1,
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green eyes,
p1 offspring,
white beans,
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recorded table 1,
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goats blue eyes,
five conditions hardy-weinberg,
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Acceptance Essays
