Xenomorphs and hereditary host behavior and traits
Something that has fascinated me about the Xenomorphs is their retention of host instincts and desires.
For example, the Giger Drone molesting someone, then promptly killing them(out of what I believe is confusion). Then the Predaliens taking trophies, and understanding the basic concept of a duel.
It isn't simply ideology though, it infers a better understanding of the host species' true nature; what is tradition and what is nature.
If a Predator only took trophies based on cultural habits, would the Xenomorph spawned from it really do it too? I doubt it. However, many real species take trophies from kills, or in general. Also many species when fighting one on one fights, circle each other, until one initiates with body language or a vocalization; a roar in the case of Yautja.
Now onto host traits of the physical variety! So we all know that a lot of traits carry over, while at the same time, they seem fairly minimal. The Giger Drone had a Human skull formed in the front of its cranium, and all the Human spawned Xenomorphs have Human-like teeth.
However, the teeth of the Runner and Predalien didn't seem to be at all like their host species. They in fact seemed almost identical to Human spawned Xenomorph teeth.
So is the Human-like tooth inherent to all Xenomorphs, perhaps from Human-like Engineers DNA being involved in their origins? Or is it because the Runner and Predalien were the offspring of a Human spawned Queen?