Psychologist: Identical twins are virtually the same genetically  Moreover, according to some studies, identical twins separated at birth and brought up in vastly different environments show a strong tendency to report similar ethical beliefs, dress in the same way, and have similar careers
Thus, many of our inclinations must be genetic in origin, and not subject to environmental influences
Identical twins who grow up together tend to develop different beliefs, tastes, and careers in order to differentiate themselves from each other.