Genetic Technique Comparative Genomic Hybridisation A method for comparing two sets of chromosomal DNA by analyzing differences in the copy number and location of specific sequences. It is used to look for large sequence changes such as deletions, duplications, amplifications, or translocations. MESH:D055028 Sufficient CGH Comparative Genomic Hybridizations SCDO:0005243 Comparative Genome Hybridization Comparative Genomic Analysis