What questions do biologists ask about behaviour: ethology: the study of animal behaviour from an evolutionary perspective. For many animals, much of their behaviour is like the web-spinning behaviour of spiders unlearned and highly stereotypic: stereotypic behaviour is often species-specific most individual of a given species perform the behaviour in the same way. 53. 2 how do genes and environment interact to shape behaviour: genes do not encode behaviours, rather affect behaviour by setting motion a series of gene-environment interactions that underlie the development of proximate mechanisms that enable certain behavioural responses. Experiments can distinguish between genetic and environmental influences on behaviour: deprivation experiment: rear young animal so it is deprived of all experiences relevant to the behaviour understudy. Genetic control of behaviour is adaptive under many conditions. Individuals might fail to acquire the appropriate behaviour, or acquire the appropriate behaviour, or acquire inappropriate behaviour, if genes did not exert strong influences on the development of the behaviour.