#3
Quote by YA89
No. Intervals are the same with the respective names.

so intervals seem to be on the major scale
#4
Major scale:
Root
Maj 2nd
Maj 3rd
Perfect 4th
Perfect 5th
Major 6th
Major 7th
Octave

Natural minor has a b3, b6 and b7, which makes it:
Root
Maj 2nd
min 3rd
Perfect 4th
Perfect 5th
min 6th
min 7th
Octave
#5
The intervals are always the same, however the major and minor scale contain different intervals, see zhilla's post.

Perfect Unison/diminished 2nd = 0 semitones
Minor 2nd/augmented unison = 1 semitones
Major 2nd/diminished 3rd = 2 semitones
Minor 3rd/augmented 2nd = 3 semitones
Major 3rd/diminished 4th = 4 semitones
Perfect 4th/augmented 3rd = 5 semitones
Diminished 5th/augmented 4th = 6 semitones
Perfect 5th/diminished 6th = 7 semitones
Minor 6th/augmented 5th = 8 semitones
Major 6th/diminished 7th = 9 semitones
Minor 7th/augmented 6th = 10 semitones
Major 7th/diminished octave = 11 semitones
Perfect octave/augmented 7th = 12 semitones
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#6
Quote by boobinski
so intervals seem to be on the major scale


Sorry, I should have been more descriptive. I guess now you got the idea.