Looking for a fresh and exciting way to teach genetics? In this unique activity, students create chromosomal maps using idealized diagrams of human chromosomes. The process is similar to that used by geneticists-students match homologous chromosomes to discover whether a cell contains numerical errors, such as trisomy-21, or structural errors, such as translocation-21. Student also learn about diseases and disorders that are related to different genotype errors. Physical manipulation of the chromosomes makes this activity fun and engaging for students, allowing them to discover the link between DNA, chromosomes, genotype, and phenotype. Includes detailed background information and procedures, student worksheets, and ten different karyotypes.Super Value Kit is complete for 10 students groups. All materials are reusable.