Originally Posted by sas0ri-sama
Q> Can a sharingan user copy an elemental jutsu, and use it with a different elemental affinity?
say, for example, if kakashi copied the Rasengan(wind), can he use Rasengan(Fire) afterwards?
also, may i kindly ask for special bloodline family tree?? like neji's?
Yes, the Sharingan can copy elemental jutsus. Kakashi copied Zabuza's water element Dragon jutsu in the first arc of the story, after all. But I don't believe that the Sharingan alone would be able to convert a copied jutsu into a different element.
Oh and no, the Sharingan cannot copy the Rasengan. <_<
And @ 2nd question -