Cloning as a sci fi concept has been around forever and used in varying degrees of 'audience acceptance' in a load of movies - The Island is one example where someone has been cloned but doesn't know they've been cloned from an original. Their isolation from the original gives them a different nature but the same kind of knowledge albeit in flashback form - things seem very familiar but the clone is unable to put a finger on why. Old TV shows, especially those from Gerry Anderson, dealt with cloning in someway - copying brain patterns, robot 'clones' with the same memories and abilities, etc.

My idea about the clones was that all abilities are biologically inheritable but that it requires proper schooling to harness those skills. Jedi are biologically able to sense the Force more than 'normal' people and are trained to focus on that ability. It's not to say that the midichlorian idea is an acceptable one - I still think it was a very shoddy idea to try and explain the Force and how people were taken to become Jedi. The 'What If?' surrounding cloned Jedi is whilst you'd be able to copy the original's form right down to their brain pattern, you'd still be able to manipulate the end result via the gestation period. Implanted thoughts and suggestions would come from the 'nursery' which would eventually conflict with the original's memory patterns and begin to drive them mad perhaps? The other side to this is perhaps by having two of the same accessing the Force, the Force itself would know the genuine one and begin to reject it, thus driving the original mad...?

Sorry if it doesn't make an awful lot of sense...it kinda did when I started typing it out. Anyway, it's early...I'll leave the '3 year old' method to you guys to shoot holes into it :p