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Evolutionary Genetics involves the study of how genetic variation within populations changes over time, driven by processes such as mutation, selection, gene flow, and drift. It explores the genetic basis of adaptations and evolutionary relationships among organisms, drawing on principles from genetics, population biology, and systematics. In the context of Genetic Engineering, Evolutionary Genetics can inform the design and implementation of strategies for creating or modifying organisms with desired traits, by understanding how genetic changes accumulate and spread through populations over time. This subfield thereby contributes to our ability to predict and manipulate evolutionary outcomes in a range of contexts, from agriculture and medicine to conservation and biotechnology.