The 5th (G) is omitted completely from this voicing – a common practice in jazz ... to arrange voicings to ‘sit’ nicely in a chord progression (both to your ears and on the fretboard ...

There are a number of different minor scales available, suiting different situations and chord progressions. Two of the most common used by guitarists are the minor pentatonic (1-b3-4-5-b7 ...