Hmm.....there is no need really to clone the bass.
Ok, so your bass is in pattern 1 for instance, and it's running through channel 1 on your mixer. Now, at the bottom of your mixer there are little arrows and dials. If you click on channel 1, you will see there is a dial underneath the master channel. This tells you that channel 1 is routed directly to the master channel.
Now, if you click the little arrow above it, the dial will disappear, so the channel is not going anywhere. Now, if you then click on the same arrows underneath patterns 2,3 & 4 you will see little dials appear. Turn them up a notch, and now your bass from channel 1 is routed through channels 2,3 & 4.
By doing this, you can now have channel 2 as your low end frequencies, 3 as your mids, and 4 as your high's. So EQ all the mid and high out of channel 2, and mono it. then take out the low frequencies, and extreme high frequencies out of channel 3. And finally, channel 4 you can take out all the low end and most of the mids.
From here, you can add overdrive to the mids, distort etc. Add chorus, reverb etc to the highs blah blah blah......
Now, if you look at channels 2.3 & 4, you will notice they are all seperately being routed to the master channel, so again, click the arrow under the master channel for each of the three channels, so they are no longer going directly to the master channel. Now if you route these three channels, into channel 5, this means you have seperated the bass into your highs, mids and lows, and then bought them back together into one channel, where you can add compression to gel them all back into one bass.
I hope you can understand what I'm trying to explain as it took me ages to understand how to do this, but now I do know, it's made a whole world of difference to my productions. If there is something you are not clear on, please let me know and I'll try to explain in better detail