I don't think a pregnant bacteria on Mars is 2 lives any more than I think a pregnant human on Earth is 2 lives
Discussion
To be fantastically pedantic and slightly off-topic, I respectfully disagree. Only around 43% of the cells in a human body are genetically human. That’s 40 trillion or so non-human lives to 30 trillion human cells. We are proverbially legion. None of which has any bearing on the ethical point you were correctly making.
Oh yeah, I forgot I'm just a bunch of mitochondria and stuff
