Genomic density of trinucleotide repeat motif pairs (normal and reverse complement) in different genomic regions of Daphnia pulex, Drosophila melanogaster, and Apis mellifera. Whereas in intergenic regions both types are always of similar density, in introns and CDS regions there are often strong differences in densities supporting a strand-specific repeat motif usage (strandedness). Lines with boxes show the respective mean repeat length (secondary y-axis).
Mayer et al. BMC Genomics 2010 11:277 doi:10.1186/1471-2164-11-277