[eli5] If genetics passed down from generation carry the anatomy of the creature, how does genetics pass down behaviors/instincts?

Question

[eli5] If genetics passed down from generation carry the anatomy of the creature, how does genetics pass down behaviors/instincts?

In: 8

Answer 1

maybe you have more of an comparative advantage to use your long arms? Like picking tall fruit (would that be a behavior, or you effectively and efficiently using the tools in your tool box?)