You can think of the Earth as being made up of a number of layers, sort of like an onion. These layers get more and more dense the closer to the center of the earth you get. See the picture below to see the four main layers of the earth: the crust, mantle, outer core, and inner core. Crust.
A master's degree is usually required in order to work as a genetic counselor. Many schools that offer these 2-year programs look for applicants who have not only completed undergraduate course prerequisites, but also have volunteer or paid experience in a counseling or social work role.
The role of a genetic counselor is to provide information and emotional support to individuals who: have been diagnosed with a genetically inherited illness, or who are at a high risk for developing a disease or condition according to their genes, or who possess any type of genetic mutation or birth defect.