# Tinbergen's four questions

> Nikolaas Tinbergen의 네 가지 질문.

<Nikolaas Tinbergen>의 네 가지 질문.

- Behavioural adaptive functions
- Phylogenetic history; and the proximate explanations
- Underlying physiological mechanisms
- Ontogenetic/developmental history.

## Example

[Visual perception](https://wiki.g15e.com/pages/Visual%20perception.txt):

- Function: To find food and avoid danger.
- Phylogeny: The vertebrate eye initially developed with a blind spot, but the lack of adaptive intermediate forms prevented the loss of the blind spot.
- Causation: The lens of the eye focuses light on the retina.
- Development: Neurons need the stimulation of light to wire the eye to the brain