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Genetics is the scientific study of heredity, which involves the passing on of traits from parents to offspring. While it's often associated with biology and life sciences, genetics has deep roots in physics and chemistry, as well as mathematics. In fact, the discovery of the structure of DNA, a key milestone in genetics, was made possible by the application of X-ray crystallography, a physical technique. Genetics also involves statistical analysis to understand patterns of inheritance and gene expression. Therefore, it fits naturally under the broader category of physics as it relies heavily on principles from this field. Genetics is about understanding how information encoded in DNA is transmitted across generations and how genes influence the traits we observe in living organisms. It's a field that seeks to explain the complexity of life by uncovering the underlying mechanisms that drive biological processes.