Sorry this got long.
I've been chirping about my very first bass I got the other day, an early Christmas present.
I watched the dvd that came with it... a very basic intro to bass and technique. I learned how to hold the bass and position and use my right hand fingers (which are getting sore... I'll never be able to play Dust in the Wind again!

). I always wondered why bass players pluck upwards and seem to not move the right hand very much. Well, now I know. The instructor also went into timing and rhythm, which is familiar to me, playing guitar.
I also read a post or three here about making up and keeping generic riffs to use. So I think I did. But here's the question...
Does the rhythm have to be a strict (for example) 1+2+3+4+ 1+2+3+4+ or 1234 1234, etc., like a metronome or can it follow the rhythm guitar's pattern, or any steady pattern?
For example, I was playing with Night Moves. Maybe not the best to start with because the rhythm guitar plays an unusual strumming pattern:
Chord progression: G F C F G
Pattern for each chord (the change to F is very quick):
G: DDUD/DUD/DU F: DUDU C: DDUD/DUD/DU
G I was a little too tall; could've used a few pounds F
C Tight pants points hardly reknown F
G She was a black haired beauty with big dark eyes F
C And points all her own sitting way up high F G F
C Way up firm and high F
So what I noodled around with was just using the roots with the rhythm of the chords, and the two finger plucking:
....G...........F...........C
G|--0-0-0-0-0-----------------------------------|
D|--------------3-3-3-3-3-----------------------|
A|--------------------------3-3-3-3-3-----------|
E|----------------------------------------------|
Being my own best fan

I thought it didn't sound
horrible; I'm just wondering if something like that is
right.
Even in this bass cover of Instant Karma, she is following the rhythm of the chord changes (same on guitar as piano). I tried it also, using the root notes of the chords (A F#m F G A D Bm) think it sounds good. Of course, what do I know?
http://www.youtube.com/watch?v=ByEORJXe50s
He plays Instant Karma the same way she does.
http://www.youtube.com/watch?v=dctPg...eature=related