Chris Mooney summarizes a recent paper (pdf) on the heritability of political ideology and how specific genes are associated with certain political views. Razib Khan analyzes how this applies to the real world:
The disposition toward conservatism and liberalism does not manifest in absolute tendencies, but attitudes and actions comprehensible only against a reference which allows for one’s own bias to come to the fore. This is why heritabilities of being conservative and liberal can remain the same over time and across cultures, even though conservative and liberal can mean very different things in different contexts. Some natural genetic variance in the traits which allow for political ideological difference may also suggest to us there is little possibility of a “end of politics,” where there is total unanimity on all topics.