If you Want to explain you Answer You are free to do so ! It's My Assignment ! That's the reason i am doing this Survey !
i voted 50-50 because i believe that personality shapes by both environmental impacts and heredity.. if you live in a happy and awell-behaved society , you must have very good personality but if you live in a society which is full of criminals, you must have criminal mind too.. so heredity and society affect your personality.