When we look at the world around us today, we are struck by the amazing diversity that we see in people. Each person as an individual is unique, be it in physical outlook or character.
Genes are the chemical blueprint unique to each person.
Different people may have the same genes but in different combinations and so they may have some similarities in their characteristics, but never all. Our environment is all other factors that may contribute to the development of an individual such as nourishment, climate and even culture or upbringing. It also includes the element of chance. The only situation where we have genetically identical individuals is in identical twins that came from the same fertilised egg. From this we can infer that any differences between them arose from environmental factors.