Originally posted by: kaigan
i think it has to do with kakashi's clan bloodline, since they were also advanced. maybe his advanced bloodline could some how use the sharingan but not the one that itachi has.
I don't think he has any bloodline ability at all. Kakashi is the son of a great ninja, but that doesn't mean that he has a bloodline ability. I don't see any reason to assume that kakashi's family has an advanced bloodline.