The G Mixolydian scale has 7 notes: G – A – B – C – D – E – F. Mixolydian is the major scale with a ♭7. It is the scale of the dominant 7th chord and of rock: a major sound with a bluesy edge. In Indian music it is Khamaj thaat.
Compared with the G major scale it has ♭7 (F instead of F♯).
The explorer above is set to G Mixolydian: the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.