Migration And Its Effects On Population - 1558 Words

Abstract: Migration such as immigration or emigration is the transfer of alleles, which are responsible for genetic variations, from the gene pool of one population to another. Therefore, it may change allele frequencies or range due to the reproduction of the immigrated individuals. This study was performed to see how migration modifies the effects of frequent disasters on allele frequencies in moth populations. Migration would counteract the effects of natural disasters that increase genetic drift by introducing new alleles into the gene pool; this allows for new combinations and increases variability within populations. Keeping all other factors constant, PopGen was used to maneuver Hardy-Weinberg’s equilibrium parameters where different levels of migration decreases the harm caused by frequent and occasional disaster rates in a set population. As the migratory rate increases, the relative frequencies of each allele-â€Å"A† â€Å"a† remained closed to 0.5, respectively , indicating that by increasing variability, migration decreases the impacts of disaster rates on a population. Introduction: Population genetics is the study of alleles’ frequency changes and distributions in response to the five factors that drive evolution- natural selection, mutation, migration and genetic drift, within populations (McDonald and Linde, 2002). It focuses on interbreeding populations’ overall gene pool, and whether the present alleles changes over time. Alleles are gene variants at a loci in aShow MoreRelatedThe Positive and Negative Impacts of Migration in London Essay621 Words   |  3 Pagesnegative and positive effects of migration in London. As the London Migration Observatory claim London has the largest number of migrants among all regions of the UK. About 37% of the UK’s foreign-born population was in London (LMO, Dr.Rienzo and Dr.Vargas-Silva). Furthermore, According to the Benton-Smith statistic, London is the 5th International city in the world after NY, Toronto, Dubai and LA.That is why I am choosing this city. This research will analyze the impacts of migration to the London inRead MoreGlobalization And The Global Migration903 Words   |  4 Pages Global migration can be defined as the movement of large groups of people from one area to another. There are two kinds of migration. There is internal migration and there is external migration. External migration is the movement of groups of people between different countries. The movement doesn’t occur within the country. Internal migration is the movement of groups of people from one part of an area to another. The movement occurs within the country. Globalization is the global economic integrationRead MoreMigration Within a Countrys Borders Have Greater Negative Impacts at Their Origin Than Their Destination1338 Words   |  6 Pagesâ€Å"Migration within a country’s borders have greater negative impacts at their origin than their destination†. Discuss the statement [15 marks] Introduction * Definition of migration and internal migration * Reasons why people move (Push/Pull Factors) * Explain Lee’s migration model * Types of Internal Migration (Inter-urban, Intra-urban, counter urbanisation, urbanisation) Body * Social. Economic. Environmental. Political. (S.E.E.P.) impacts * Case Study (Statistics) Read MoreDiscuss the Issues Related to Genetic Diversity: Mutations, Sexual Reproduction, Migration, and Population Size.1087 Words   |  5 PagesDiscuss the issues related to genetic diversity: mutations, sexual reproduction, migration, and population size. --- Generally speaking, there are numerous issues related to genetic diversity which include mutations, sexual reproduction, migration, and population size. To begin with, mutations (any change in the DNA sequence of an organism) introduce new genetic information into a population by altering alleles (a form of a gene usually arising through mutation) that are already present. OccasionallyRead MoreRelationship Between Net Migration And Economic Growth1024 Words   |  5 Pageshigher the country’s rate of population growth, the lower its income (GDP per capita) and therefore cause a decrease in economic growth. Therefore, net migration plays an important role in effect of economic growth. 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This means that the european industrial revolution brought on this change of population in many areas. Most places grew and expanded with the amount of people that prospered in it. The part about â€Å"Nothing remotely like this economic behavior has happened before†, means that the european industrial revolution was the start and the cause of waves of migration. Population grew because death rates decreased and birth rates increased. Town’s rural industries grew along withRead Morebiol 1209 writing assignment 1 Essay948 Words   |  4 PagesAllele 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 be less aggressive with other males in the population. This is important in maintaining polymorphic populations (Magalhaes, 2014). In my self-createdRead MoreMigration And Its Effects On The Global Economy729 Words   |  3 Pagesmigration, a contribution to economic growth in the host country and the flow of remittances, money the migrants earn working abroad and then sending the earnings back to the family, to the home country. Yet, migration brings negative attitudes on immigrants such as â€Å"†¦worries that migration may reduce the job opportunities for natives and place a strain on public services†¦fears are exacerbated by the weak global economy, and many countries have adopted measures†¦to stem the flow of peoples acrossRead MoreClimate Change Is An Ongoing Problem1569 Words   |  7 Pagesworld. There are many health effects, shortage of resources due to energy use, and perhaps more importantly, the detrimental and in some cases irreversible environmental impacts. The climate does change due to natural forces, however; human impacts are the cause of such dramatic change. â€Å"Unless greenhouse gas emissions are severely reduced, climate change could cause a quarter of land animals, birdlife and plants to become extinct† (Weather Information, 2014). Some effects on these animals are mammals