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Related Concept Videos

Gene-Environment Interactions01:20

Gene-Environment Interactions

1.5K
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

Background and Environment Affect Phenotype

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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.
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...
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Transcription01:10

Transcription

138.4K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
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Constitutive and Regulated Gene Expression01:27

Constitutive and Regulated Gene Expression

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Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
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Mutations01:35

Mutations

31.3K
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
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Mutations01:39

Mutations

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Overview
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
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Gene functional dynamics: environment as a trigger?

Eliyahu G Stoupel

    Journal of Basic and Clinical Physiology and Pharmacology
    |November 22, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Space weather, including solar activity, may influence human gene expression. This research explores the connection between space factors and the timing of medical events, suggesting a regulatory role for space weather.

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    Area of Science:

    • Genetics
    • Space Physics
    • Environmental Health

    Background:

    • Human genome deciphering has advanced genetic pathology understanding.
    • Emerging research links space weather factors to human health and disease timing.

    Purpose of the Study:

    • To investigate the extent to which space weather parameters affect human gene expression.
    • To explore the potential regulatory role of space weather in biological processes.

    Main Methods:

    • This hypothetical paper proposes exploring correlations between space weather data (solar activity, geomagnetic activity, cosmic rays, particle flux) and human genetic expression patterns.
    • Analysis would involve examining the timing of medical events in relation to space environmental factors.

    Main Results:

    • The timing of numerous medical events shows a correlation with space weather phenomena.
    • This suggests that gene activity is not static and can be influenced by external space factors.

    Conclusions:

    • Space weather components, such as solar and geomagnetic activity, may play a regulatory role in human gene expression.
    • The observed links between space weather and medical event timing support the hypothesis of dynamic gene activity influenced by space factors.