Quantitative Trait Loci (QTL)

Quantitative trait loci (QTL) are specific regions of DNA that are associated with particular traits that vary in degree, such as height, weight, or crop yield. These traits are influenced by multiple genes and environmental factors. By identifying QTLs, scientists can understand how different genes contribute to these traits, which can help in areas like agriculture, medicine, and breeding. Essentially, QTL studies help researchers pinpoint the genetic basis of traits that are not simply present or absent, but instead exist on a continuum.