Polygenic traits are traits determined by the combined effect of more than one pair of genes. Human stature is an example of this trait. The size of all body parts from head to foot combined determines height. The size of each individual body part are determined by numerous genes.
Although you don't necessarily have to major in interior design, a bachelor's degree or higher in the discipline provides the best foundation for a career, according to the Foundation for Interior Design Education and Research.
Other Interior Design Degrees. A residential planning diploma program can cover interior design basics as applicable to the residential planning field. You'll study textiles, historic and contemporary styles, space planning, kitchen and bath design, and computer-aided drafting and design.