Digestion of nucleic acids : Nucleic acids are digested in duodenum and jejunum-ileum.

Digestion in small intestine : The nucleic acids in  are acted upon by nucleases prsent in the pancreatic juices. The nucleases act on the nucleic acids to give nucleotides which are further broken down into nucleosides. 

Digestion of nucleotides : Nucleotides are digested in jejunum-ileum. The intestinal juice contains nucleotidases and nucleosidases.