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Related Concept Videos

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...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).Mechanisms of Genetic VariationThe original sources of genetic variation are mutations,...
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...
Genetic Variation01:25

Genetic Variation

Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

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Related Experiment Video

Updated: Jun 23, 2026

Control of Eating Behavior Using a Novel Feedback System
04:48

Control of Eating Behavior Using a Novel Feedback System

Published on: May 8, 2018

Genetic variation and effects on human eating behavior.

Mariken de Krom1, Florianne Bauer, David Collier

  • 1Rudolf Magnus Institute of Neuroscience, Department of Neuroscience & Pharmacology, UMC Utrecht, Utrecht, The Netherlands. M.deKrom-3@umcutrecht.nl

Annual Review of Nutrition
|April 30, 2009
PubMed
Summary

Genetics significantly influences eating behaviors, taste, hunger, and satiation. Research into the genetic underpinnings of obesity and eating disorders is advancing, utilizing large-scale studies and endophenotype approaches.

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Last Updated: Jun 23, 2026

Control of Eating Behavior Using a Novel Feedback System
04:48

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Published on: May 8, 2018

Fat Preference: A Novel Model of Eating Behavior in Rats
05:57

Fat Preference: A Novel Model of Eating Behavior in Rats

Published on: June 27, 2014

Assessment of Social Transmission of Food Preferences Behaviors
04:56

Assessment of Social Transmission of Food Preferences Behaviors

Published on: January 25, 2018

Area of Science:

  • Neuroscience
  • Genetics
  • Behavioral Science

Background:

  • Feeding is a complex physiological process influenced by genetic and environmental factors.
  • Understanding the genetic basis of eating behavior is crucial for addressing pathological conditions like obesity and eating disorders.

Purpose of the Study:

  • To review the current research on the genetics of eating behavior, including taste, satiation, and hunger.
  • To provide an overview of genetic studies on obesity and eating disorders.
  • To discuss methodologies for powerful genetic studies, such as whole-genome association studies.

Main Methods:

  • Review of existing literature on the genetics of eating behavior, obesity, and eating disorders.
  • Examination of large-scale whole-genome association studies (WGAS).
  • Discussion of endophenotype approaches and animal studies.

Main Results:

  • Genetics plays a significant role in various aspects of eating behavior.
  • Whole-genome association studies offer a powerful approach to identify genetic influences on complex traits.
  • Endophenotype studies can help identify genetically influenced core traits relevant to eating disorders.

Conclusions:

  • Further research into the genetics of eating behavior, particularly using endophenotype and animal models, is essential.
  • Identifying genetically influenced endophenotypes can inform diagnostic criteria for eating disorders.
  • This knowledge can guide interventions to promote healthier eating behaviors.