Idea for a race/species
I was watching an episode of VOY the other day (stop booing); the one where some race claims that Harry is one of them, implanted in a human womb to blend with humans and then bring the genetic/cultural diversity with him back to the planet.
Well, that semi-plausible idea got my idea factory working. I thought of a creature, a non or semi sentient creature on some world. It has a unique ability: it can absorb DNA from other creatures, and then uses that DNA to replicate traits found in the donor. For example, it touches (or eats, or bites or whatever the method of transfer) a turtle, it starts to develop a shell. It samples grass, it begins to develop photosynthesis. I know in the real world this would be a stretch, but in ST, we see changes in genes imediately changing the host, so at least on some level, it does work in ST.
Ok, so these creatures go about their little lives, changing genes, passing them on, occupying various niches as they absorb new traits from other animals. Then one day, a ship lands on the planet. Who they are in not important, but some chance encounters with the creatures give the creatures a huge boost. They bypass millions of years of evolution: they are given advanced evolved traits (bipedialism, developed brains, and possibly more if the crew are beings with traits like telepathy!) Suddenly, the crew of the ship finds primative bipeds where before there were only small crawling creatures. What happens next?
If you played this as an adventure for your cast, you could rp the ethical dilema of what they had done: they have just radicaly altered the biosphere of this world. Or you could go for just the adventure: Science team is now surrounded by these new bipeds, who are quite aggressive, and they need saving (or to get out, if your running the science team). Perhaps the creatures are developing mentally as well as genetic/physically, and want to worship/learn from/steal tech/steal genes from the science team.
Or all this could have happened in the past, and this new Species (we'll call them Darwins) is active in your cast's sector. They may be the new bad guy ("The Darwins! They call them the Genetic Borg!") Or maybe they are the 'species of the week' and just the latest scientific mystery to unravel in this strange new universe. It would be interesting to find a race that has 'evolved' in the last hundred years, rather than millions.
Or maybe they are allies of the FED, or even (big stretch here) new members, or perhaps just protected by the FED (i could see the FED Science Council setting up a quarantine on the planet, to both study and protect these creatures.
I know I've left the details of the creatures vauge (i just had a passing thought that maybe they have a lifespan like mayflies...they live for a short time, reproduce and die. Or maybe they are like a phoenix; they get new genetic material and then die, with new offspring left in their passing).
Thoughts?
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"Yes, it's the Apocalypse alright. I always thought I'd have a hand in it"
Professor Farnsworth