Nature and nurture has to do with how a person becomes who they are through their personality and traits. Nature is what a person is born with, their traits and personality is due to their genetics. Nurture is being born with a blank slate and traits and personality a person gets comes from the experiences they go through throughout their life. They are opposite from one another.
I believe that it is flawed to ask how much of a particular behavior is due to genetics and how much is due to experience. When a person says that they are acting a certain way due to their genetics is wrong, people learn most of their behaviors through what they have experienced throughout their lives unless it is something that can be passed down, like an illness or something mental wise. An example would be seeing something going wrong as a child and every time it did the child’s parent or parents would get angry instead of thinking rationally, growing up the child would most likely do the same because that is what they know and have learned to do.
It is appropriate to separate the contributions of genetics and experience when measuring the development of differences among individuals because genetics is something a person cannot control while an experience is something you can have control over. Every person is different, no two people are alike. Each person is raised different, has seen, felt and heard different things, people learn from what they have seen and dealt with while growing up and can change and control their reaction to it. When it comes to genetics each person has a different family background, they cannot control it, and it is stuck to them and keeps getting passed down through generations.