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What is Population Genetics?01:25

What is Population Genetics?

A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.While some alleles of a given gene might be observed commonly, other variants...
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Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
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Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
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Genetic Material01:20

Genetic Material

Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.

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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
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Community genetics. Its definition 2010.

Leo P Ten Kate, Lihadh Al-Gazali, Sonia Anand

    Journal of Community Genetics
    |April 9, 2011
    PubMed
    Summary
    This summary is machine-generated.

    This study defines community genetics, a medical field focused on genetic health within populations. It outlines the essential components for a comprehensive definition, providing a foundational understanding for the discipline.

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    Area of Science:

    • Medical Genetics
    • Public Health
    • Genomics

    Background:

    • The field of genetics has expanded beyond individual-focused applications.
    • Understanding genetic influences on population health is increasingly important.
    • A clear definition is needed to delineate the scope of community genetics.

    Purpose of the Study:

    • To establish a precise and comprehensive definition for the medical field of community genetics.
    • To outline the necessary criteria for an adequate definition in this specialized area.
    • To provide a framework for understanding the core components of community genetics.

    Main Methods:

    • Historical review of genetics and public health integration.
    • Analysis of requirements for a robust scientific definition.
    • Synthesis of a new definition for community genetics.
    • Discussion of the constituent elements of the proposed definition.

    Main Results:

    • A proposed definition for the medical field of community genetics is presented.
    • Key requirements for defining community genetics have been identified.
    • The essential components and scope of community genetics are discussed.

    Conclusions:

    • A clear definition is crucial for advancing the field of community genetics.
    • The proposed definition provides a foundation for research and practice.
    • Community genetics integrates genetic principles with public health strategies.