If one is (hypothetically speaking) descended from both the uchiha and senju/uzumaki clan can he awaken the rinnegan naturally like so6p?
^^^^^^^^^^^^^no, he/she needs to be a transmigrant and get the other transmigrants power to awaken the rinnegan.
With hashi DNA not senju and you have to be transmigrat not just uchihaYou need the EMS and Senju/Uzumaki DNA
1 three tome
2 Mangekyo
3 EMS
4 Rinnegan (with Senju DNA)
Number three only applied to SasukeYou need the EMS and Senju/Uzumaki DNA
1 three tome
2 Mangekyo
3 EMS
4 Rinnegan (with Senju DNA)