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Related Concept Videos

Gene-Environment Interactions01:20

Gene-Environment Interactions

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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...
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Background and Environment Affect Phenotype02:27

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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.
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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...
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Human Genetics01:28

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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.
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Behavioral Genetics and Its Designs01:23

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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.
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Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
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Gene-environment interactions in development and disease.

C Lovely1, Mindy Rampersad1, Yohaan Fernandes1

  • 1Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA.

Wiley Interdisciplinary Reviews. Developmental Biology
|September 15, 2016
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Summary

Human development defects often arise from complex gene-environment interactions, not just genetics. This review explores how environmental teratogens and gene-ethanol interactions increase susceptibility to birth defects and fetal alcohol spectrum disorders.

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Area of Science:

  • Developmental biology
  • Genetics
  • Teratology

Background:

  • Understanding of developmental genetics relies heavily on model organisms in controlled lab settings.
  • Human development occurs in complex environments, suggesting multifactorial causes for developmental defects.
  • Gene-gene and gene-environment interactions are increasingly recognized as critical factors in human developmental abnormalities.

Purpose of the Study:

  • To review the role of gene-environment interactions in embryonic structural malformations.
  • To elaborate on specific gene-ethanol interactions contributing to fetal alcohol spectrum disorders (FASD).

Main Methods:

  • Literature review focusing on gene-environment interactions in developmental biology.
  • Analysis of studies investigating environmental teratogens and their effects on embryonic development.
  • Examination of research on genetic susceptibility to ethanol exposure during development.

Main Results:

  • Environmental teratogens, in conjunction with genetic factors, can predispose embryos to structural malformations.
  • Evidence suggests specific gene-ethanol interactions influence individual susceptibility to FASD.
  • The complexity of human development necessitates considering environmental influences alongside genetic pathways.

Conclusions:

  • Gene-environment interactions are crucial for understanding the etiology of human developmental defects.
  • Further research into gene-teratogen and gene-ethanol interactions is needed to elucidate mechanisms of susceptibility.
  • Translating findings from model organisms to human development requires accounting for environmental variables.