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Related Concept Videos

Gene-Environment Interactions01:20

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
Epigenetic Regulation01:46

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:37

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Epigenetic Regulation01:46

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Inheritance of Chromatin Structures03:17

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Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...

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Related Experiment Video

Updated: May 11, 2026

Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
13:11

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Published on: July 12, 2012

[Epigenetic: a link between environment and genome].

Benoit Labonté1, Gustavo Turecki

  • 1Groupe McGill d'étude sur le suicide; Institut universitaire en santé mentale Douglas, Montréal, Québec, Canada.

Sante Mentale Au Quebec
|May 14, 2013
PubMed
Summary
This summary is machine-generated.

Childhood adversity can lead to adult mental health issues through epigenetic changes that alter gene expression and stress response systems. These lasting epigenetic modifications increase susceptibility to mental health conditions later in life.

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Last Updated: May 11, 2026

Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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Published on: July 12, 2012

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Area of Science:

  • Neuroscience
  • Genetics
  • Psychiatry

Context:

  • Childhood adversity is a known risk factor for adult mental health problems.
  • Epigenetic mechanisms are emerging as key mediators between environmental exposures and behavioral outcomes.
  • The stress-response system is particularly vulnerable to environmental influences.

Purpose:

  • To examine the epigenetic impact of childhood adversity.
  • To explore the link between epigenetic changes and adult mental health.
  • To understand how environmental factors influence gene expression and behavior.

Summary:

  • Childhood adversity induces epigenetic modifications, altering gene expression without changing DNA sequence.
  • These epigenetic changes affect the systems regulating the stress response.
  • This predisposes individuals to mental health problems in adulthood.

Impact:

  • Highlights the role of epigenetics in mediating the long-term effects of early-life stress.
  • Provides insight into the biological mechanisms underlying the link between adversity and mental illness.
  • Suggests potential targets for interventions aimed at mitigating the mental health consequences of childhood adversity.