Answer this, does Sakura have the potential to do the following? Or could Sakura have learned the following?No, they were not, they still had to train just as much as Sakura in order to master their clan's abilities. Shikamaru learning the Shadow Binding from his father, Choji learning to control his body expansion, Neji and Hinata learning Taijutsu from Hiashi..... all of it is no different than Sakura learning Taijutsu from Tsunade. Even with inherited powers, people still have to train to use them properly, even with the rennigan.
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No, these techniques which are their trade marks requires you to come from a distinctive bloodline. Yeah they had to learn how to use them but they were are always capable of using it, it was only a matter of when they learned it. They didn't start from scratch.