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Ever wondered how traits are inherited without changing DNA? Enter epigenetics, a fascinating branch of genetics. This article breaks down what epigenetics is and how it differs from traditional genetics. We focus on three key players: DNA methylation, where adding a methyl group influences gene behaviour; histone modification, where changes in packaging proteins lead to variation; and RNA-directed DNA methylation, a guided mechanism for molecular adjustments. By unravelling these mechanisms, we uncover the hidden world shaping our genes. This exploration unveils the intricate relationship between genes and their environment, showcasing the profound impact of epigenetics on our understanding of inheritance and biological complexity.