A lever is a simple mechanism that uses a bar to pivot around a fixed point called a fulcrum. Levers can be joined together to form linkages. Simple linkages can be used to change the direction of ...

Multiple traits are often tested in gene mapping studies with the expectation that this can identify both quantitative trait loci (QTL) that are specific for each trait and genetic pathways that are ...

We conducted a 10 centimorgan (cM) linkage genome scan in a set of American extended pedigrees ascertained through probands with panic disorder. Several anxiety disorders segregate in these families.