One of the oldest arguments of psychology is Nature vs Nurture debate. These two sides have good points that are really hard to decide whether a person's development is predisposed in his or her DNA, or a majority of it is influenced by this life experiences and his environment. As of now, we know that both nature and nurture play important roles in human development, but we have not known yet whether we are developed majorly because of nature or due to nurture.
Nature is the coding of genes in each cell in us humans determine the different traits that we have on the physical features like eye color, hair color, ear size, height, and other traits. However, it is still not known whether the more features like personality, intelligence, sexual orientation, likes and dislikes are gene-coded in our DNA, too. One of the biggest issues against the nature theory is that there may be an existing "gay gene", which explains that gays are actually born that way. Another issue is that the criminal acts, tendency to divorce and aggressive behavior causing abuse can be justified by the "behavioral genes" once the researchers have proven their existence. On the other hand, the behavioral genes are somewhat proven to exist when we take a look at fraternal twins. When fraternal twins are reared apart, they show the same similarities in behavior and response as if they have been reared together.
The nurture theory holds that genetic influence over concrete traits may exist; however, the environmental factors are the real origins of our behavior. This includes the use of conditioning in order to induce a new behavior to a child, or an unlikely behavior being shown by the child. Although it is true that fraternal twins raised apart have remarkable similarities in most respects, still the intervention of the environment have caused several differences in the way they behave. As Albert Schweitzer has said, “Man can hardly even recognize the devils of his own