Figure 1: The levels at which genetic variations can occur and example techniques for their analysis. ChIP: Chromatin Immunoprecipitation; 5C: Carbon-Copy Chromosome Conformation Capture; ChiRP: Chromatin isolation by RNA purification; ChIA-PET: Chromatin Interaction Analysis with Paired-End Tag Sequencing; FAIRE: Formaldehyde- Assisted Isolation of Regulatory Elements; DNAse: DNase I hypersensitive site sequencing; NET: Native Elongating Transcript sequencing; GRO: Global Run-On sequencing; CLIP: Cross- Linking Immunoprecipitation