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.
If you want to become a manager, you generally need a degree in hospitality management or hotel management. Many of the accredited programs in the country have an interactive component that requires students to work at a local hotel for at least one semester. Many hotels also look at the experience that you have, including any jobs you had in the past that required management and leadership skills.