Learning and Application Group Activity #5 Population Genetics Basic Hardy-Weinb

Question

Learning and Application Group Activity #5 Population Genetics Basic Hardy-Weinberg Dynamics and Migration Your Name 2g. Record the and genotype frequencies before and after initial genotype frequencies and those after all of the different migration events. Compare the allele migration. Below this table explain how the migrants have altered the and genotype frequencies in each of these populations.(10 pts plus 1 pt for filling in the table) N of initial Al allele A2 alleleAIAl genotype AAZ genotype A2A2 genotype Population population or migrants Initial Population 8,000 (1a &1b) 0.44 0.453 0.437 5 0.4. 315 0.1% | 0.051 |0.348 | 1. b61 7 042 D After Migrants (2a& 2b) 460 e73 10.107 | 0.4uo After Migrants II 3,000 (2c & 2d) 0.4? After Migrants ??3,000 o.aas (2e & 2f) pattern do you see in the changes in allele and genotype frequencies of the initial population, given the What different migrant groups? Briefly explain the key characteristics of the changes different migrant groups leading to these

Explanation / Answer

Migration is the movement of individuals with specific genotype in or out of a defined population. (Immigration : moving in , emigration : moving out ). Both immigration and emigration allow for gene flow between populations. ( change in allelic frequency). As a result of change in allelic frequency genotype frequency changes too. When the population size is large migration shows a little effect on the allelic frequency. But when the population size is small migration have a bigger impact on allelic frequency. When the migrating individuals stay in the population and start mating with destination individuals it alters the initial allelic frequency of the population. As relative allelic frequency changes the genotype frequency of the population changes too. Here only some genotypes will be favoured and they will continue to reproduce. The unfavoured genotypes are less likely to reproduce.

The initial population appears to be in hardy weinberg equilibrium. However it changes after the M1 ( migration 1) . First migration is an emigration. It removes alleles from the population, reducing population's genotype frequency. Or it can also concentrate the already present alleles in the population leading to the increased allele and genotype frequencies.
Immigration add new alleles to the population, increasing population 's genetic diversity. Immigration can reduce allele and the genotype frequencies ( after migrated individuals start mating with the destination individuals a new generation is born) If the resulting genotypes are not favoured then they are less likely to reproduce. Resulting the reduced genotype frequency of some genotypes. This reduces the allelic frequency too.

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