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Related Concept Videos

Genetic Variation01:25

Genetic Variation

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.
Genes exist in different versions called alleles, which...
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).
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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.
Karyotyping01:17

Karyotyping

Overview
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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Related Experiment Video

Updated: May 18, 2026

Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays
14:06

Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays

Published on: November 12, 2012

Correction: quantifying and analyzing the network basis of genetic complexity.

Ethan G Thompson, Timothy Galitski

    Plos Computational Biology
    |September 13, 2012
    PubMed
    Summary
    This summary is machine-generated.

    This study corrects a previous publication. The correction ensures accuracy in the scientific record for future research.

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    Published on: August 13, 2012

    Area of Science:

    • Scientific publishing
    • Research integrity

    Context:

    • Ensuring the accuracy of published scientific literature is crucial for the advancement of research.
    • Corrections and errata are vital mechanisms for maintaining the integrity of the scientific record.

    Purpose:

    • To provide a formal correction to a previously published article.
    • To rectify an error identified on page e1002583 in volume 8.

    Summary:

    • A correction has been issued for an article published in volume 8.
    • The specific error is located on page e1002583.

    Impact:

    • Maintains the reliability of scientific data and findings.
    • Supports accurate citation and referencing in subsequent research.
    • Upholds the standards of scientific communication and peer review.