Environmental Manipulation which enable genes to express themselves readily is known as
Eugenics (Sir Francis Galton): Is a social philosophy which advocates the improvement of human hereditary traits through various forms of intervention (Genetic Manipulation).
Euthenics: Deals with human improvement through altering external factors such as education and the controllable environment, including the prevention and removal of contagious disease and parasites, environmentalism, education regarding home economics, sanitation, and housing (Environmental Manipulation).
Positive eugenics
Euthenics
Negative eugenics
Genetic Counselling