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Related Concept Videos

Epigenetic Regulation01:37

Epigenetic Regulation

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

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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...
Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
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...

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Related Experiment Video

Updated: May 9, 2026

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

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

Published on: July 12, 2012

DNA methylation, behavior and early life adversity.

Moshe Szyf1

  • 1Department of Pharmacology and Therapeutics, McGill University, 3655 Sir William Osler Promenade, Montreal, Quebec H3G 1Y6, Canada. Moshe.szyf@mcgill.ca

Journal of Genetics and Genomics = Yi Chuan Xue Bao
|July 24, 2013
PubMed
Summary

Early life environments can alter lifelong health through DNA methylation, a process that embeds experiences into the genome. This mechanism explains how early adversity influences gene-environment interactions and long-term phenotypes.

Keywords:
DNA methylationDemethylaseEarly life adversityEpigeneticsGlucocorticoidsMaternal careSocioeconomic statusStress

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Area of Science:

  • Epigenetics
  • Developmental Biology
  • Genomics

Background:

  • Early life environments significantly impact lifelong health outcomes.
  • Gene-environment interactions demonstrate that identical gene variants can lead to different phenotypes based on early life adversity.
  • The mechanisms by which early experiences are encoded in the genome remain incompletely understood.

Purpose of the Study:

  • To explore the role of DNA methylation as a mechanism for embedding early life environmental experiences into the genome.
  • To hypothesize how DNA methylation can mediate gene-environment interactions throughout life.
  • To highlight the critical influence of early physical and social environments, including prenatal and postnatal periods.

Main Methods:

  • This discussion focuses on the proposed hypothesis regarding DNA methylation.
  • The abstract does not detail specific experimental methods but outlines a theoretical framework.

Main Results:

  • The hypothesis posits that DNA methylation, a known mechanism for cell identity, also confers environmental-exposure specific identity to DNA.
  • This process provides a molecular pathway for embedding environmental experiences within the genome.

Conclusions:

  • DNA methylation offers a plausible mechanism for the long-term impact of early life experiences on phenotypes.
  • Understanding this epigenetic mechanism is crucial for comprehending gene-environment interactions and lifelong health trajectories.