Seven modes of G:

G Ionian :: G(I) :: G major in key of G
G Dorian :: G(ii) :: G minor in key of F
G Phrygian :: G(iii) :: G minor in key of Eb
G Lydian :: G(IV) :: G major in key of D
G Mixolydian :: G(V) :: G major in key of C
G Aeolian :: G(vi) :: G minor in key of Bb
G Locrian :: G(vii) :: G diminished in key of Ab

G-Ionian

G-Dorian

G-Phrygian

G-Lydian

G-Mixolydian

G-Aeolian

G-Locrian

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