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BIOA02H3 (153)
Chapter 53

Chapter 53: Behaviour and Behavioual Ecology -- KEY TERMS & DEFINITIONS

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Department
Biological Sciences
Course Code
BIOA02H3
Professor
Kamini Persaud

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Key TermsChapter 53: Behaviour and Behavioural Ecology
53.1-What questions do biologists ask about behaviour?
ethology: the study of animal behaviour from an evolutionary perspective
most behaviours result from complex interactions between inherited anatomical and
physiological mechanisms and the ability to modify behaviour as a result of
experience
53.2-How do genes and environment interact to shape behaviour?
Genes do not encode behaviours.
Gene products such as enzymes can affect behaviour by setting in motion a series of
gene-environment interactions that underlie the development of proximate
mechanisms that enable individuals to make certain behavioural responses.
Two experiments in evaluating how genes and experience interact to shape
behaviours:
oDeprivation experimentinvestigators rear a young animal so that it is
deprived of all experience relevant to the behaviour under study. If it still
exhibits the behaviour, we may assume that the behaviour can develop
without opportunities to learn it
oGenetic experimentinvestigators alter the genomes of organisms by
interbreeding closely related species, or by knocking out or inserting specific
genes to determine how these manipulations affect their behaviour (known as
fosB knockouts).
Selective breeding: means of genetic manipulationhas been used extensively to
select for both anatomical traits and behaviour.
Releaser: an object, event, or condition required to elicit a behaviour
oThe response of the animal to a releaser may be mechanical or chemical
oDepends on the motivational state of the animal
Genetic control of behaviour is adaptive under many conditions
Critical period: a specific time in which the some types of learning take place only
at a specific time in the animals development.
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Description
Key TermsChapter 53: Behaviour and Behavioural Ecology 53.1-What questions do biologists ask about behaviour? ethology: the study of animal behaviour from an evolutionary perspective most behaviours result from complex interactions between inherited anatomical and physiological mechanisms and the ability to modify behaviour as a result of experience 53.2-How do genes and environment interact to shape behaviour? Genes do not encode behaviours. Gene products such as enzymes can affect behaviour by setting in motion a series of gene-environment interactions that underlie the development of proximate mechanisms that enable individuals to make certain behavioural responses. Two experiments in evaluating how genes and experience interact to shape behaviours: o Deprivation experimentinvestigators rear a young animal so that it is deprived of all experience relevant to the behaviour under study. If it still exhibits the behaviour, we may assume that the behaviour can develop without opportunities to learn it o Genetic experiment investigators alter the genomes of organisms by interbreeding closely related species, or by knocking out or inserting specific genes to determine how these manipulations affect their behaviour (known as fosB knockouts). Selective breeding m: eans of genetic manipulationhas been used extensively to select for both anatomical traits and behaviour. Releaser:an object, event, or condition required to elicit a behaviour o The response of the animal to a releaser may be mechanical or chemical o Depends on the motivational state of the animal Genetic control of behaviour is adaptive under many conditions Critical period:a specific time in which the some types of learning take place only at a specific time in the animals development. www.notesolution.com
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