Figure 4
Mapping anchor loci by scoring intron length polymorphisms. Top right: Mapping pedigrees were generated using a backcross design initiated using the laboratory strain MI5 and the field strain Tara. Top left: Primers were first tested in the 4 backcross parents to identify intron length polymorphism. Bottom: Informative primer pairs were used to screen the backcross pedigree (TMM01).