BIOLOGY 1M03 Lecture Notes - Lecture 21: Kangaroo Rat, Sensory Cue, Haplodiploidy
14 Jun 2020
School
Department
Course
Professor
Document Summary
Causation of behaviour: proximate - the immediate sequence of physiological e ects that lead to the behaviour. Neurons send signals to the brain which cause muscle movements: ultimate - the adaptive or evolutionary origins of the observed behaviour. What did that animal do that bene ted its ability to produce e. g. avoid predation. Evidence for a genetic component to behaviour: deprivation experiments: Prevent learning opportunities through isolation of subject. Fixed action pattern - pattern that appears, essentially complete, and is played out to completion once activation by a simple sensory cue: genetic behaviour, first performed without training, stereotyped and predictable, sensory cue. Sign stimulus - external stimulus that triggers fap. Releaser - stimulus that signals from one individual to another. Evidence for a genetic component to behaviour: selection experiments: Evidence for a genetic component to behaviour: crossing of genetic strains. Evidence for a genetic component to behaviour: molecular genetics.
