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Exam1 - bu people
Exam1 - bu people

... 9. Briefly describe the Wright-Fisher model of random genetic drift. a) An classic experimental study using Drosophila randomly selected 8 males and 8 females to produce each successive generation, thus maintaining a constant population size of 2N = 32. We looked at the expected and observed results ...
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Single Gene Inheritance
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... • Genes under investigation are closely linked on the same chromosome. • X-linked inactivation may result in manifesting heterozygote females. • Genetic interactions between different genes. • Trait is inherited on genetic material from only one parent. e.g. mitochondrial DNA is only inherited from ...
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Microevolution

Microevolution is the change in allele frequencies that occur over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow, and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed 'macroevolution' which is where greater differences in the population occur.Population genetics is the branch of biology that provides the mathematical structure for the study of the process of microevolution. Ecological genetics concerns itself with observing microevolution in the wild. Typically, observable instances of evolution are examples of microevolution; for example, bacterial strains that have antibiotic resistance.Microevolution over time leads to speciation or the appearance of novel structure, sometimes classified as macroevolution. Macro and microevolution describe fundamentally identical processes on different scales.
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