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Related Concept Videos

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...
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...
Genetic Screens02:46

Genetic Screens

Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
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...
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,...

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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

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Published on: December 7, 2021

Generalizing genetical genomics: getting added value from environmental perturbation.

Yang Li1, Rainer Breitling, Ritsert C Jansen

  • 1Groningen Bioinformatics Centre, University of Groningen, 9751 NN Haren, The Netherlands.

Trends in Genetics : TIG
|September 9, 2008
PubMed
Summary
This summary is machine-generated.

Genetical genomics can now study how molecular networks change with environmental factors. This generalized approach helps understand individual differences in responses to external influences.

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Area of Science:

  • Systems Biology
  • Genetics
  • Environmental Science

Background:

  • Genetical genomics studies genetic effects on molecular systems.
  • Molecular networks are influenced by environmental conditions.
  • Understanding biological systems requires multi-environment analysis.

Purpose of the Study:

  • To generalize genetical genomics by incorporating environmental factors.
  • To investigate the plasticity of molecular networks.
  • To explain differential individual responses to environmental factors.

Main Methods:

  • Combining genetic perturbations with selected environmental perturbations.
  • Developing strategies for individual and treatment allocation.
  • Analyzing molecular network plasticity across diverse environments.

Main Results:

  • The proposed generalized genetical genomics approach allows for studying molecular network plasticity.
  • This method provides insights into the interaction between genetic and environmental factors.
  • The strategy outlines selection and allocation for multi-environment studies.

Conclusions:

  • Generalized genetical genomics is essential for a comprehensive understanding of biological systems.
  • This approach is key to explaining individual variability in response to drugs, toxins, and nutrients.
  • Careful consideration of promises and pitfalls is necessary for successful implementation.