I'd be surprised if this hadn't happened at some point. Rocks from Mars found their way over to Antarctica.
However something to consider is that whatever biological material that ends up landing elsewhere probably wouldn't be able to survive and reproduce. I say that because even the hardiest microbial organisms on Earth still depend on the activity of other species in the ecosystem. For instance, only certain species of bacteria produce Vitamin B and I can't think of any species that is completely self-reliant. It's one thing to keep a cell from dying in a harsh environment, but it would have to bootstrap itself into metabolizing and reproducing in a barren environment with no prior life to consume building blocks from.
That being said, I'm not enough of a biologist to know if there are any extremophile bacteria which are completely self sufficient. If there are, we can rule out my layman's assertion/thought experiment.
However something to consider is that whatever biological material that ends up landing elsewhere probably wouldn't be able to survive and reproduce. I say that because even the hardiest microbial organisms on Earth still depend on the activity of other species in the ecosystem. For instance, only certain species of bacteria produce Vitamin B and I can't think of any species that is completely self-reliant. It's one thing to keep a cell from dying in a harsh environment, but it would have to bootstrap itself into metabolizing and reproducing in a barren environment with no prior life to consume building blocks from.
That being said, I'm not enough of a biologist to know if there are any extremophile bacteria which are completely self sufficient. If there are, we can rule out my layman's assertion/thought experiment.