Complex trait or quantitative trait is a trait that doesn’t behave according to simple Mendelian inheritance laws. These traits show a continuous range of variation and are influenced by both environmental and genetic factors. It is often said that complex traits<span> are those that are influenced by more than one factor.</span>
Human height probably has a complex pattern of inheritance because people in the same family vary in height. This difference in height suggests that multiple genes may control human height.
