biol 1209 writing assignment 1 Essay

948 WordsMar 15, 20144 Pages
BIOL 1209 Writing Assignment 1 Cover Sheet I certify that the writing in this assignment is my individual work and is my sole intellectual property. It does not contain the ideas, or writing of other individuals/authors. Author ___________________________ Date ___________________ Lab Instructor ____________________ Lab Section # ____________ The Change in Allele Frequency of the Male Cichlid Fish Population General Research Question: Lake Malawi’s cichlid male population of fish are tested on their ability to build bowers to attract the female population. Altering this extended phenotype, or ability to build bowers resulted in no change of mating, but males that built successful bowers showed to…show more content…
Over five trials the average allele frequency with this change in the migration rate is 0.366. Figure 3. This graph depicts the average allele frequency of male cichlid fish when the change of fitness in the homozygous dominant (AA) and the homozygous recessive (aa) are decreased to 0.5 and 0.6 based on their ability to find food sources after the hurricane hit. The average value over five trials is shown to be 0.496. Figure 4. This graph depicts the average allele frequency of male cichlid fish when a mutation that goes from recessive to dominant arises within the population at a rate of 0.001. The average value over five trials is shown to be 0.318. Discussion: From the data we can conclude that different traits or parameters can effect a population in many different ways. It can decrease or increase a population depending on the trait. After a hurricane hits Lake Malawi the cichlid fish male population must adapt to the new factors that have been put upon them. Mutation within the population supports the fact that it can cause dominant and recessive allele frequency to decrease. Migration causes the allele frequency to lower as well due to movement of the population after the hurricane. The cichlid male fish with a higher fitness are more suitable for their environment, but when their fitness is lowered, their allele frequency decreases. This

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