I don't think human DNA generally codes for the behavior derectly. Rather, DNA can code for how the brain learns from incoming data streams.
If the brain naturally tunes into some sources or patterns of input rather than others, it may learn very quickly from the preferred sources. And as long as those sources carry signals that are fairly invariant over time, it may seem like those signals are instinctual.
For instance, it may appear that humans learn to build relationships with kin (both parents and children) and friends, to build revenue streams (or gather food in more primitive societies) and reproduce.
Instead, the brain may come preloaded to generate brain chemicals when detecting certain stimuli. Like oxytocin near caregivers (as children) or small fluffy things (as adults). When exposed to parents/babies, this triggers. But it can also trigger around toys, pets, adopted children, etc.
Friendship-seeking can be, in part, related to seretonin-production in certain social situations. But may be hijacked by social media.
Revenue-seeking behavior can come from dopamin-stimulus from certain goal-optimzing situations. But may also be triggered by video games.
And the best known part: Reproductive behavior may primarily come from sexual arousal, and hijacked by porn or birth control.
Each of the above may be coded by a limited number of bytes of DNA, and it's really the learning algorithm combined with the data stream of natural environments that causes specific behaviors.
If the brain naturally tunes into some sources or patterns of input rather than others, it may learn very quickly from the preferred sources. And as long as those sources carry signals that are fairly invariant over time, it may seem like those signals are instinctual.
For instance, it may appear that humans learn to build relationships with kin (both parents and children) and friends, to build revenue streams (or gather food in more primitive societies) and reproduce.
Instead, the brain may come preloaded to generate brain chemicals when detecting certain stimuli. Like oxytocin near caregivers (as children) or small fluffy things (as adults). When exposed to parents/babies, this triggers. But it can also trigger around toys, pets, adopted children, etc.
Friendship-seeking can be, in part, related to seretonin-production in certain social situations. But may be hijacked by social media.
Revenue-seeking behavior can come from dopamin-stimulus from certain goal-optimzing situations. But may also be triggered by video games.
And the best known part: Reproductive behavior may primarily come from sexual arousal, and hijacked by porn or birth control.
Each of the above may be coded by a limited number of bytes of DNA, and it's really the learning algorithm combined with the data stream of natural environments that causes specific behaviors.