How does Ivan Turgenev use imagery in Fathers and Sons?

Turgenev uses imagery of the wild as opposed to the domestic to portray the differences between Arkady and Bazarov. Katya describes one as being a wild beast, as opposed to the other.... a domestic animal. Bazarov frequently appears to be matted in mud, willing to get dirty in the name of science. As a result, Pavel dislikes him. Arkady, however, is described as a domestic animal.... happy with the way things are and content to stay within his given boundaries.