I say that when you roll (turn) the aircraft......
Here we go again with the sloppy terminology. Do you mean roll or do you mean turn? The two are not synonymous - you can roll an aeroplane without turning it just as you can turn an aeroplane without rolling it.
To get back to basics, we shouldn't be referring to the further effect of roll in any case but the further effect of aileron - Effects of
Controls, remember?
If, in straight and level unaccelerated flight, the aileron is displaced and none of the other controls is moved, the aircraft will roll with the result that the lift vector will be displaced from the vertical causing sideslip. The directional stability of the aircraft will cause yaw and, if uncorrected, the aircraft will enter a spiral descent.
Roll => Sideslip => Yaw. What else is there to explain?
BB - No degree, just CFS A1/A2(H)