The midichlorian thingie was one of the weakest, lamest postulates of the Star Wars substructure. How’d the rascals get on all the planets and into all those different beings, anyway? Panspermia? And why, being phagic rather than genetic, did they tend to cluster in families?

They’d have been much better off going with the occasional recurrence of an inheritable genetic pattern that occurred (rarely) in many sentient species, simply as a result of the response of consciously self-aware life to its surroundings.