So, I'm just now getting into Marvel comics because I love all the lore and stuff that surrounds the universe. I've been browsing the wiki and reading about Celestials and how they affected the evolutionary trajectory of Humans, and I have some questions...
I've heard that what allowed Humans to exhibit superhero genes were mutations implanted by the Celestials during the First Host, but later on I have also read that what actually caused this wasn't the First Host but rather when the Progenitor died, and his blood infused with the primordial soup. Which one of these was it, or was it both?