Genetic mapping

Genetic (or linkage) mapping is based on Mendelian inheritance, and uses recombination frequency to determine the linear order of genes or DNA sequences (such as RFLPs, SSRs, etc.). Most of the points on a genetic map are of the latter type, commonly called markers. Markers rely on one of two basic molecular biology techniques: Southern hybridization and the polymerase chain reaction (PCR).

Here, a tomato F2 population has been used to calculate recombination frequencies, and hence genetic distances between a set of SSRs and other molecular markers.