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human
[Alien/AVP-R] why do the xenomorphs in Alien vs Predator Requiem have basic blood when all other xenomorphs have acidic blood?

As seen in the movie Alien and Aliens, xenomorphs have acidic blood, as it eats through metal and burns organic tissue, but in Alien vs Predator Requiem, their blood dissolves organic tissue like strong bases such as lye does, why are these xenomorphs blood on the exact opposite end of the PH scale?
gpt
The xenomorphs in requiem didnt not come from a queen, they came from the predalien, who lacks the acidic blood comepletly. Its possible that it took some traits from the predalien, and it changed the composition of their blood.