Gene mapping is a common topic in the biology olympiad. A genetic map is simply a representation of the distribution of a set of loci within the genome. So using the handouts below, learn the basics of gene mapping.
http://www.informatics.jax.org/silver/chapters/7-1.shtml
http://www.mreroh.com/student/APbiodocs/Unit%205%20-%20Division%20and%20Genetics/Special/linkage%20gene-mapping.pdf
