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Epigenetics refers to changes in gene expression that do not involve alterations to the underlying DNA sequence. It explores how various factors, such as environment and behavior, can influence the way genes are turned on or off, thereby impacting the development and functioning of organisms. As part of natural selection, epigenetics helps explain how traits can be inherited across generations without changes in the DNA itself. In the context of genetics, epigenetics highlights the complexity of gene expression and regulation, transcending the simplistic view of genetic determinism. It underscores the dynamic interplay between genes and environment, providing a more comprehensive understanding of inheritance and evolution.