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Phylogenetics is the study of evolutionary relationships among organisms using genetic data. It involves constructing and analyzing phylogenetic trees, which depict the historical patterns of descent and diversification among different species. This field draws on principles from genetics, biochemistry, mathematics, and computer science to infer patterns of evolution and test hypotheses about the relationships among organisms. Phylogenetics plays a crucial role in understanding the origins and diversity of life on Earth, and has numerous applications in fields such as medicine, agriculture, and conservation biology. In the context of the broader categories of Science, Genetics, and Evolution, phylogenetics represents a synthesis of these areas, providing insights into the mechanisms of evolutionary change at the genetic level and shedding light on the historical relationships among different groups of organisms.