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.
Specialized Areas in Interior Design. Often, degrees in interior design offer students an array of choices for specializing their knowledge. Given the vast nature of the industry, students can take this opportunity to hone their understanding of a niche area in order to make themselves stand out in the job market.