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Epigenetics refers to modifications on gene expression that do not involve alterations to the underlying DNA sequence itself. It explores how outside factors like environment and behavior can change the way genes work, and how these changes may be heritable. As a field closely related to evolution, epigenetics sheds light on how organisms adapt to their surroundings by tweaking gene expression patterns over generations without having to undergo genetic mutations. In this context, it becomes apparent that evolution is not solely driven by genetic alterations but also by these subtle yet impactful epigenetic changes. By examining the mechanisms behind heritability of these modifications and how they influence phenotypes, epigenetics provides a more comprehensive understanding of evolution as an interplay between genetics and environmental factors.