ELI5: How does "instinct" work at the molecular level?

I get how information for developing certain organs or functions etc. get passed on, but how does complex and brain-engaging processes get passed down in *organic water and oil soup droplets*?

Like how does a bird process complex information about gathering the right type of materials to build the right type of nest? Even in isolation from other birds, they are able to carry out these instructions...?

reddit.com
u/Powerful_Crab_2905 — 13 hours ago
▲ 5 r/AskBiology+1 crossposts

How does "instinct" work at the molecular level?

I get how information for developing certain organs or functions etc. get passed on, but how does complex and brain-engaging processes get passed down in *organic water and oil soup droplets*?

Like how does a bird process complex information about gathering the right type of materials to build the right type of nest? Even in isolation from other birds, they are able to carry out these instructions...?

reddit.com
u/Powerful_Crab_2905 — 2 days ago