I have always been interested in family history. Chromosomes are funny things, aren't they? They may skip a generation and you can find children who resemble the grandfather, rather than either parent. Heredity is more important than environment. Blood will tell. For example, a man is either musical by heredity or he is not. You can't make a man musical by the environment. You can find a person who is very musically inclined and be puzzled because neither parents nor grandparents had any ear for music. But if you trace it back, you will find that the great-grandfather was a musician. But the environment plays a great part in the development of a man. It is significant whether a man is brought up in the city or in the country, near a lake or on the shores of the ocean.