The 4-chart set covers key concepts for Chromosomes. Each 18” x 12” chart is double-sided and laminated. One side provides an illustrated overview of the topic, while the reverse features “write-on/wipe-off” graphic organizers, problem-based questions and other review activities. The Chromosomes Bulletin Board Chart Set includes the following charts: Chromosomes, Genes& DNAHow Genes WorkGene TechnologyModern Genetics.