Using Excel Mapper to Design Chromosome Idiograms Gálvez Salido, Aarón Navajas Pérez, Rafael DNA Protocol Physical map Idiogram Karyotype Evolution Idiograms are graphical representations in which chromosomes appear ordered by their relative size, homology groups, and the presence of cytogenetic landmarks such as centromeres, secondary constrictions, and banding patterns. They have become crucial elements in cytogenetic research. Here, we describe a simple protocol for spreadsheet software to draw idiograms and map any type of sequence onto them. These graphs can be easily used to present research results and can become the basis to raise and resolve questions related to different biological issues. The methodology is inexpensive, easy to follow, and allows customization to meet a wide range of educational scenarios focused in genetics and evolution. 2022-10-05T06:43:16Z 2022-10-05T06:43:16Z 2022-09-01 journal article Aaron Gálvez Salido, Rafael Navajas-Pérez; Using Excel Mapper to Design Chromosome Idiograms. The American Biology Teacher 1 September 2022; 84 (7): 396–398. doi: [https://doi.org/10.1525/abt.2022.84.7.396] https://hdl.handle.net/10481/77174 10.1525/abt.2022.84.7.396 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional University of California