Where did STI/STDs come from? Since they are created via giving to someone who has already contracted it
So where did they originate from?
In: Biology
Imagine, if you will, a time when all life was nearly as simple as it could be. A single cell, no nucleus, no wall, just a fatty layer that divided it from the world.
Over time, as these primitive cells sought out food, they developed a way to communicate. They’d send out little packets of RNA. This was to help others get together for common food sources. Not every cell understood these, though, and didn’t provide an easy way to gather the packets.
A new envelope was developed, as things happen. That one became the first virus. Initially it did what it was meant to do: communicate through RNA. Eventually, though, some mutation in the packet caused the newly created packet to become deadly. Instead of communicating, it merely destroyed the host cell to create more of its kind.
The cells evolved to prevent this from happening, but the virus also evolved along side, coming up with new keys. Now, to understand this, some number of the viruses simply had a mutation that already worked with the new locks, but didn’t work with the old. That’s just how evolution works. Mutations that work.
So as the cells mutated, reproduced, changed… we get more complex life. The viruses remain. They’ve mutated to infect different cells. The mutations work on THIS cell, but not on THAT cell. Eventually we get animals. The cells that are effected by THIS virus are all reproductive. Since this happens to be a major point of contact between animals that are very similar (um…usually) the virus was able to keep reproducing. And so, an STD.
The difference between an STD and every other kind is merely where it reproduces. This will apply for fungus and bacteria as well, BTW. Not all STI are viral. It’s going to be pretty much the same story, though. There was time before sexual reproduction where these diseases were doing their thing. There was a time before that thing infected something where it could sex all day without risk, but their junk touched a thing and poof, it adapted.
One day COVID wasn’t in humans. The next year it’s all over the planet in dogs, cats, deer… This is pretty much the same thing, but slower.
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