yeah very easy. I often copy entire choruses that I nailed perfectly and insert them to the other choruses rather than recording or fixing the underlying ones.
How I do it.
First set the snap to setting to MEASURES. This way the splits and pasting are always perfectly on the measure line.
Next split before the segment you want to copy and after the segment you want to copy. Some experimenting with this will help you learn to do this perfectly every time.
With the 2 splits, you now have a new clip in the track. Now simply use copy and paste to make as many clips as you need.
If your timing is dead on musically, and the splits are in the right place...... you should be able to paste the new clips end to end and not hear anything abnormal..... just a riff/chord progression that repeats perfectly as many times as you needed.
My website & music:
www.herbhartley.com MC4/5/6/X1e.c, on a Custom DAW
Focusrite Firewire Saffire Interface
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"Just as the blade chooses the warrior, so too, the song chooses the writer "