This set of large duplications covers >90% of the second chromosome. These duplications are particularly useful in screening for dosage-dependent enhancers and suppressors of mutant phenotypes. In addition, because the Cam duplications are nested within inverted chromosomal segments, they act as balancer chromosomes for the duplicated regions, making them ideal for recovering and maintaining haplo-lethal and haplo-sterile mutations. Order by stock number or select the predefined set called DpKit-2 to receive the whole set.