system
Given the following post, respond as if you're commenting on Reddit:
human
[Alien] If Xenomorphs inherit physical traits from their hosts then how many time would the Xenomorph have to infect someone to become indistinguishable from normal humans?
gpt
It would never happen. The Xenomorphs don't inherit genes randomly; one human-incubated Xenomorph is going to be essentially identical to another. Each one grabs the same sets of genes from their host.

That makes me suspect that the face-hugger and larva form of the Xenomorph have certain "blanks" in their DNA that they then patch in from their host. These blanks were probably inserted in their genetic code by the Engineers to allow them to adapt to a wide variety of environments, making them useful as a weapon on virtually any planet.

This means a human-bred Xenomorph can create an egg that is eventually implanted in a Predator and the result will just be a Predalien, not some human-predator super hybrid.