]> Qtl by trait ontology category request The QtlByTraitCategoryRequest class represent information that must be provided in a qtl-by-trait-category resource graph by a client in order to retrieve a Qtl object (see the resource description graph at http://vpin.gramene.org/sswap/qtl/qtl-by-trait-category for details). The data to be provided consists of trait category (represented by the qtl:traitCategory property). 1