Looking back at the comment I made earlier I realised that it sounds like I don't like hybrids. That isn't true. I was simply trying to think of ways to explain them in Trek. As for the die hard science lovers out there who say its impossible, this in in a universe where we can travel faster than light and where a device can disassemble a person send them through a stream of energy and reassemble them in less than 10 seconds.
The "fi" part of sci-fi is there for a reason