A harmonic minor
The G-major scale has only one sharp (which is F#)
No. The mode of A Dorian uses the same key signature as G major, so the only sharp note is F.
The F-sharp natural minor scale consists of these notes:F-sharp, G-sharp, A,G,C-sharp,D, and EThe F-sharp harmonic minor scale consists of these notes:F-sharp, G-sharp, A, B, C-sharp, D and E-sharp.The F-sharp melodic minor scale consists of these notes:[going up] F-sharp, G-sharp, A, B, C-sharp, D-sharp and E-sharp.[going down] F-sharp, E, D, C-sharp, B, A and G-sharp.
G Major has one sharp, which is F sharp.
A harmonic minor
The G-major scale has only one sharp (which is F#)
There is no difference in terms of each scale would sound, as F-sharp and G-flat are the same exact note. However, when notated on sheet music, they would look different, as the F-sharp scale would use only sharps, and the G-flat scale would use only flats.
No. The mode of A Dorian uses the same key signature as G major, so the only sharp note is F.
The F-sharp natural minor scale consists of these notes:F-sharp, G-sharp, A,G,C-sharp,D, and EThe F-sharp harmonic minor scale consists of these notes:F-sharp, G-sharp, A, B, C-sharp, D and E-sharp.The F-sharp melodic minor scale consists of these notes:[going up] F-sharp, G-sharp, A, B, C-sharp, D-sharp and E-sharp.[going down] F-sharp, E, D, C-sharp, B, A and G-sharp.
The dominant is the 5th of the scale, so in G-sharp it's D-sharp.
No scale has an F♯ and a D♯ alone, however the keys of E, B, F♯, C♯ major and likewise their relative minors have both the notes F♯ and D♯ as degrees in their scale.
G Major has one sharp, which is F sharp.
Only one: the F-sharp.
A harmonic minor.
C, F, and G are sharp in this scale.
G, A#, B#, C#, D#, E# and Fx (I'm using all scale degrees for this). Fx is F double sharp which means 'F sharp sharp', which is the same as G.