Ppt Population Genetics

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PPT genetika populasi 1. Dhian Misrofatun 2. Aulia Febriasari Rombel 1 Pend. Biologi 2015 - UNNES
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  POPULATION GENETICS By Group 9: ã  4401415026, Dhian misrofatun ã  4401415100, Aulia febriasari Rombel 1 - Biology Education  POPULATIONS GENETICS  Populationgenetics  examines allelic variation among individuals, thetransmission of allelic variants from parents to offspring generation after generation, and the temporal changes that occur in the genetic makeup of apopulation because of systematic and random evolutionary forces.  The theory of population genetics is a theory of allele frequencies. Eachgene in the genome exists in different allelic states, and, if we focus on aparticular gene, a diploid individual is either a homozygote or aheterozygote. Within a population of individuals, we can calculate thefrequencies of the different types of homozygotes and heterozygotes of agene, and from these frequencies we can estimate the frequency of each of the  gene’s  alleles. These calculations are the foundation for populationgenetics theory.  Hardy-Weinberg Law In a large random mating population in the absence of mutation,migration, selection and random drift, allele frequency remains thesame from generation to generation. Furthermore, there is a simplerelationship between allele frequency and genotypic frequency  Ideal population of the Hardy-Weinberg principle 1. Two sexes and the population consist of sexually mature individuals2. Mating between male and female are equal in probability (independent of distance between mates, type of genotype, age of individuals3. Population is large and actual frequency of each mating is equal to Mendelian expectation 4. Meiosis is fair. 5. All mating produce the same number of offspring, on average. 6. Generations do not overlap7. There is no difference among genotype groups in the probability of survival8. There is no migration, mutation, drift and selection
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