I know very little about genetics and I don't know anything about the Y chromosome apart from the fact that it determines that you are a male. I could imagine though that different Y haplogroups, since they contain different mutations, produce different hormone levels and thus influence your personality. If that were true, you could for instance predict that men belonging to certain haplogroups are more likely to show criminal behaviour. But perhaps I'm contributing way too much influence to the Y chromosome. Can anyone more knowledgeable in this field enlighten me here?