PATHOLOGY

Detailed explanation-1: -Positive experiences, such as exposure to rich learning opportunities, and negative influences, such as malnutrition or environmental toxins, can change the chemistry that encodes genes in brain cells-a change that can be temporary or permanent. This process is called epigenetic modification.

Detailed explanation-2: -Gene expression can be altered by environmental factors such as food, drugs or exposure to toxins, according to Duke Magazine. These changes can range from small to so significant that certain genes in our system can be turned off or on when they are supposed to be the opposite way.

Detailed explanation-3: -In some situations, genes play a larger role in determining your behavior; in other situations, environment plays a larger role in influencing your behavior. If you had a whole different set of experiences over your lifetime your genes may be expressed in different ways, and you may behave differently than you do now.