Epitranscriptomics is the study of chemical modifications on RNA molecules that can influence their function and stability. These modifications, such as methylation and pseudouridination, can affect how genes are expressed and how cells respond to various signals. By understanding these changes, researchers can gain insights into cellular processes and disease mechanisms. This field is important because it expands our knowledge beyond the genetic code found in DNA. It highlights how RNA modifications can play a crucial role in regulating biological functions, potentially leading to new therapeutic strategies for diseases like cancer and neurodegenerative disorders.