Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Multiple Allele Traits01:49

Multiple Allele Traits

38.2K
The Concept of Multiple Allelism
38.2K
Lethal Alleles02:41

Lethal Alleles

18.1K
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
18.1K
Frequency-dependent Selection01:21

Frequency-dependent Selection

24.2K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
24.2K
What is a Frequency Distribution00:51

What is a Frequency Distribution

27.6K
A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
27.6K
Mean From a Frequency Distribution01:11

Mean From a Frequency Distribution

23.0K
Sometimes, data gathered from an experiment on a large sample or population are organized into concise tables. In such cases, the frequency of the quantitative data set is plotted in the form of a table. Or else, the data values are grouped into the quantity’s intervals, which form classes, and their respective frequencies are known. That is, the data values are distributed over different categories or classes. This is known as frequency distribution.
When such a data set is encountered,...
23.0K
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

4.6K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
4.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The seminal proteome of a monandrous fly, Drosophila subobscura.

Proceedings. Biological sciencesĀ·2026
Same author

Hepatic cellular stress response pathways exhibit species differences in basal and inducible activity.

Toxicological sciences : an official journal of the Society of ToxicologyĀ·2026
Same author

An AI-Ready Phosphorylation Meta-Analysis for <i>Saccharomyces cerevisiae</i>.

Journal of proteome researchĀ·2026
Same author

The promise of AlphaFold for gene structure annotation.

Nucleic acids researchĀ·2026
Same author

A Landscape Analysis of Human SUMOylation.

Molecular & cellular proteomics : MCPĀ·2026
Same author

Ubiquitin-like SUMO protease expansion in rice (Oryza sativa L.).

The plant genomeĀ·2026
Same journal

Nanotechnology-Stem Cell Strategies in 3D Glioblastoma Organoid: Targeting Glioma Stem Cells Within a Complex Tumor Microenvironment.

Methods in molecular biology (Clifton, N.J.)Ā·2026
Same journal

Mapping the 3D Chromosome Organization of a Biosynthetic Gene Cluster by Capture Hi-C (CHi-C).

Methods in molecular biology (Clifton, N.J.)Ā·2026
Same journal

Mapping the 3D Chromosome Organization of Streptomyces by Hi-C.

Methods in molecular biology (Clifton, N.J.)Ā·2026
Same journal

CUT&Tag Epigenomic Profiling of Biosynthetic Gene Clusters in Arabidopsis thaliana.

Methods in molecular biology (Clifton, N.J.)Ā·2026
Same journal

Rhizobium rhizogenes-Mediated Hairy Root Transformation Protocol for Lotus japonicus and Other Legumes.

Methods in molecular biology (Clifton, N.J.)Ā·2026
Same journal

Characterization of Bioactive Saponins from Sea Cucumbers.

Methods in molecular biology (Clifton, N.J.)Ā·2026
See all related articles

Related Experiment Video

Updated: Feb 9, 2026

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

32.3K

Allele Frequency Net Database.

Faviel F Gonzalez-Galarza1, Antony McCabe2, Eduardo J Melo Dos Santos3

  • 1Department of Molecular Immunobiology, Faculty of Medicine, Centre for Biomedical Research, Autonomous University of Coahuila, Torreón, Coahuila, Mexico. faviel.gonzalez@uadec.edu.mx.

Methods in Molecular Biology (Clifton, N.J.)
|June 3, 2018
PubMed
Summary
This summary is machine-generated.

The Allele Frequency Net Database (AFND) provides immune-related gene and allele frequencies for over 1505 human populations. This valuable resource aids research in immunology, genetics, and population studies.

Keywords:
FrequenciesHLAImmunogeneticsPolymorphismsPopulation genetics

More Related Videos

Generation of Comprehensive Thoracic Oncology Database - Tool for Translational Research
11:18

Generation of Comprehensive Thoracic Oncology Database - Tool for Translational Research

Published on: January 22, 2011

16.5K
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
10:17

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations

Published on: November 3, 2010

23.4K

Related Experiment Videos

Last Updated: Feb 9, 2026

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

32.3K
Generation of Comprehensive Thoracic Oncology Database - Tool for Translational Research
11:18

Generation of Comprehensive Thoracic Oncology Database - Tool for Translational Research

Published on: January 22, 2011

16.5K
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
10:17

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations

Published on: November 3, 2010

23.4K

Area of Science:

  • Immunology
  • Population Genetics
  • Bioinformatics

Background:

  • The Allele Frequency Net Database (AFND) is a comprehensive online repository.
  • It houses data on immune-related gene and allele frequencies across diverse human populations worldwide.
  • The database includes extensive information on the human leukocyte antigen (HLA) system.

Purpose of the Study:

  • To present commonly used search functionalities within the AFND.
  • To highlight recent advancements and developments in the AFND platform.
  • To underscore the utility of AFND in various scientific disciplines.

Main Methods:

  • Data compilation from numerous global populations.
  • Inclusion of genetic data from polymorphic regions, notably HLA.
  • Development and refinement of web-based searching mechanisms.

Main Results:

  • AFND currently contains data from 1505 populations, encompassing over ten million individuals.
  • The database facilitates research in histocompatibility, immunology, epidemiology, pharmacogenetics, and population genetics.
  • Recent updates enhance the accessibility and utility of AFND for researchers.

Conclusions:

  • AFND serves as a critical resource for understanding human genetic diversity in immune-related genes.
  • The database's search features and ongoing developments support a wide range of scientific investigations.
  • Continued expansion and refinement of AFND will further benefit the scientific community.