In psychology, heredity pertains to the biological process by which parents transfer biological characteristics to their children. It remains pivotal in the development of particular physical attributes, temperament, intellectual abilities, and even predispositions to certain behaviors or mental health issues. Heredity is carried through genes, which are an array of DNA segments that provide the ‘blueprint’ for development and functioning. For instance, a child may inherit the color of eyes or height from their parents, but they may also inherit a genetic susceptibility to mental disorders, such as depression, or even more serious disorders like schizophrenia. Psychologists seek to understand the equilibrium that exists between nature, or genetics, and nurture, or the environment, by studying heredity. Studies of twins and of adoption track, illuminate the ways in which a person can be shaped by their biological traits and their environment, as well as the genetic and intellectual factors. Heredity is not a solitary process, but rather, genes are inextricably intertwined with the environment in a multitude of ways. Someone may be predisposed to anxiety in a genetic sense, but it may not be developed, depending on the level of stress, parenting, or the social climate the person is in. Heredity biologically underlies development; the world draws on these attributes for their practical manifestation. Emphasizing the perception of this interaction allows psychologists to comprehend more ways in which people differ, and supports fully integrated genetic and environmental strategies in education, health, and therapy.