But even using the lax biological rules of Star Trek, I can see no way that two beings with differing blood chemistry could breed without help.
I can see no way to produce enough energy to warp space-time around a vessel to move through space at effectively faster than light speeds, no way to break a person or object into a billion tiny pieces and assemble it remotely, no way to create a stable wormhole, no way for non-linear energy beings to exist, no way flying around a sun would cause time travel, no way the Vorta could be immune to most poisons you can think of....
Hmm, now that you mention it, Star Trek is impossible. Thanks for enlightening me - I mean, ruining everything!
Okay, ignore my sarcasm and don't get offended. My only point is that it's ridiculous to choose one part of Star Trek to not believe. Personally, I think you are correct - in reality
, two lifeforms that are 'alien' to one another could breed. But in Star Trek
, they can. In Star Trek
, slingshot-ing yourself around the sun sends you back in time. This point has been made before, but I had to say it. If you are willing to suspend your disbelief to the point that warp travel is possible (and easy), hybrids are no less believable, in my humble opinion.
We know all humanoids (well, most) in Trek
came from the ancient humanoids, which is why they can interbreed. The same genetic engineering that made them walk upright, have opposable thumbs, two eyes, etc., could also have given the DNA 'instructions' as to how to create life with a different set of DNA, telling it what traits would exist, which would be dominant, whose blood type would flow in the child, what the skin color would be...just like two humans creating a child.
On the other hand, if you just want to imagine that every hybrid had assistance, go ahead...K'Ehleyr said her parents needed 'help' so that is a valid opinion. I think it could happen sometimes without assistance, but that's just me.