IMHO, genetic information is not a well defined term. However, if your asking about what sections of a genome contain information, sections other than protein-coding sequences contain lots of important information.
1. Some sequences of DNA do not code for protein, but rather code for functional RNAs. For example, the ribosome is made up of a combination of functional RNA molecules and proteins and the RNA molecules play very important roles in catalysis. Also, small RNAs called microRNAs (miRNA) play important roles in regulating the expression of many genes.
2. DNA regions do not have to even be translated into RNA in order to contain information and have important effects on an organism. Promoter sequences that lie directly upstream of protein-coding genes are important for specifying the exact conditions under which the protein will be expressed. Introns can contain protein-binding motifs that regulate the alternative splicing of a specific protein. So called junk DNA, can contain sequences that aid in the positioning of nucleosomes on DNA (although this issue is still being debated).
Also, it is important to note that we still don't completely understand all the information that is contained in DNA. For example, the article describing how DNA sequences may encode nucleosome positioning was published just a year-and-a-half ago.
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Topic: genome includes introns or not? (Read 10854 times)