Who is Adam Trask from East of Eden and what is their importance?

Adam Trask is the son of Cyrus Trask and his wife in Connecticut and is born after the Civil War. The Trask home is ruled by Cyrus who dominates his religious wife and son, Adam, and then his second wife and son, Charles, after the death of the first Mrs. Trask. As a young person, Adam is the living representation of Abel, the good son in the story of Genesis in the Bible.