Faatupu se lomiga e sili atu ona lavelave o lenei fuaiupu O se vaega o le DNA lea e fesootaʻi atu i se uiga faapitoa o le phenotypic.
O le mea moni, o se lomiga e sili atu ona lavelave o le fuaiupu o le "A quantitative trait locus (QTL) is a region of DNA that is associated with a particular phenotypic trait - these QTLs are often found on different chromosomes. "