The natural minor scale is a variation of the major scale. In fact, every major key has a "relative minor" that shares the exact same notes. For example, G major and E minor use the same notes, but they start and end on different roots.

What makes the minor scale sound different are the intervals: specifically the flat 3rd (b3), flat 6th (b6), and flat 7th (b7). These smaller intervals give the scale its darker, more introspective, or melancholic character.

On the bass, the minor scale shape is just as moveable as the major scale. By learning this pattern, you gain access to a completely different emotional palette for your playing.