What is the role of RNA in epigenetics?

RNA plays a crucial role in the field of epigenetics by regulating how genes are expressed. Three primary types of RNA are involved: messenger RNA (mRNA), regulatory non-coding RNA, and small non-coding RNA. Each of these functions differently to influence gene expression.

1. mRNA: This type of RNA carries the genetic code from DNA to make proteins, which directly influences various cellular functions and characteristics 1.

2. Regulatory Non-Coding RNA: These RNAs do not code for proteins but regulate gene expression by modifying processes like DNA methylation and histone modification 2.

3. Small Non-Coding RNA: These RNAs attach to mRNA to either enhance or suppress the production of proteins, effectively turning genes on or off 3.

   
   1
   Understanding Epigenetics
   00:25:17
   
   2
   Epigenetic Control
   00:16:45
   
   3
   Inherited Trauma
   00:10:16

Through these mechanisms, RNA acts as an intermediary, translating genetic information and contributing to the dynamic processes that control gene activity and organismal biology.