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Related Concept Videos

Aggression01:47

Aggression

Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for hire...
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
Causes of Social Behavior III: Biological and Environmental Influences01:28

Causes of Social Behavior III: Biological and Environmental Influences

Social behavior is a complex phenomenon that arises from the interaction between biological predispositions and environmental influences. This intricate interplay shapes how individuals think, feel, and act in various social contexts. Understanding these mechanisms requires insights from psychology, neuroscience, genetics, and evolutionary theory.Environmental Influences on Social BehaviorEnvironmental factors, including temperature, odors, and visual stimuli, play a crucial role in shaping...
Secondary Motives: Affiliation Motivation and Aggression Motivation01:21

Secondary Motives: Affiliation Motivation and Aggression Motivation

Affiliation motivation is the intrinsic desire to connect with others and belong to a social group, which plays a crucial role in forming and maintaining personal relationships. This type of motivation is essential for psychological well-being, as it provides individuals with a sense of community and support. An example of this is a student who joins a study group in order to feel a sense of connection. People with high affiliation motivation actively seek social approval, take satisfaction in...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.

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Related Experiment Video

Updated: May 19, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
09:12

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

Published on: July 4, 2013

Genetics of aggression.

Robert R H Anholt1, Trudy F C Mackay

  • 1Department of Biology, North Carolina State University, Raleigh, North Carolina 27695-7617, USA. anholt@ncsu.edu

Annual Review of Genetics
|September 1, 2012
PubMed
Summary
This summary is machine-generated.

Aggression is vital for survival and social structure. Unraveling the complex genetic basis of aggression, using model organisms like fruit flies, reveals widespread genetic contributions and interactions.

More Related Videos

Studying Aggression in Drosophila (fruit flies)
11:06

Studying Aggression in Drosophila (fruit flies)

Published on: February 25, 2007

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster
07:19

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster

Published on: December 30, 2015

Related Experiment Videos

Last Updated: May 19, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
09:12

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

Published on: July 4, 2013

Studying Aggression in Drosophila (fruit flies)
11:06

Studying Aggression in Drosophila (fruit flies)

Published on: February 25, 2007

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster
07:19

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster

Published on: December 30, 2015

Area of Science:

  • Neurogenetics
  • Behavioral Genetics
  • Evolutionary Biology

Background:

  • Aggression is crucial for resource competition and social hierarchy in animals.
  • Abnormal aggression in humans is linked to neuropsychiatric disorders, influenced by genetics and environment.
  • Studying aggression's genetic architecture is complex due to phenotypic measurement challenges and environmental variables.

Purpose of the Study:

  • To investigate the genetic underpinnings of aggressive behavior.
  • To explore the utility of model organisms for dissecting the neurogenetics of aggression.
  • To identify genomic regions and interactions contributing to aggression.

Main Methods:

  • Systems genetics approaches in Drosophila melanogaster.
  • Mutational analyses and genome-wide transcript analyses.
  • Artificial selection studies and genome-wide epistasis analysis.

Main Results:

  • A significant portion of the genome contributes to aggressive behavior.
  • Widespread epistatic interactions influence the manifestation of aggression.
  • Single-gene mutations can cause hyperaggression in mice, dependent on genetic background.

Conclusions:

  • Complex genetic architectures, involving numerous genes and interactions, underlie aggressive behavior.
  • Model organisms like Drosophila melanogaster are valuable for studying the neurogenetic basis of aggression.
  • Comparative genomics is essential for a comprehensive understanding of aggression's evolutionary and neurogenetic basis.