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Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Pharmacogenetics and Pharmacogenomics: Overview01:29

Pharmacogenetics and Pharmacogenomics: Overview

Pharmacogenetics and pharmacogenomics examine how genetic factors influence an individual's response to drugs. While pharmacogenetics focuses on the impact of specific genetic variants on drug effects, pharmacogenomics takes a broader approach, studying how genetic variation across populations contributes to differences in drug responses. These fields aim to explain why individuals may experience varying levels of efficacy or adverse reactions to the same medication.Variability in drug...

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Updated: Jun 21, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
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In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

Published on: August 20, 2019

Internet resources in medical genetics.

Darrel J Waggoner1, Roberta A Pagon

  • 1The University of Chicago, Chicago, Illinois, USA.

Current Protocols in Human Genetics
|July 8, 2009
PubMed
Summary

This guide reviews essential web resources for genetic testing information. It covers molecular diagnostics, inherited diseases, and newborn screening for clinicians and consumers.

Area of Science:

  • Genetics
  • Bioinformatics
  • Clinical Medicine

Background:

  • Clinicians require accessible, reliable web resources for genetic testing.
  • Information on molecular basis of inherited diseases is crucial for patient care.
  • Consumers and professional societies also need curated genetic information.

Purpose of the Study:

  • To provide an overview of commonly used web-based information resources.
  • To support clinicians in applying genetic testing in patient care.
  • To assist consumers and professional societies in accessing genetic information.

Main Methods:

  • Literature review of web-based genetic information resources.
  • Categorization of resources based on user needs (clinicians, consumers, societies).

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Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
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Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease

Published on: April 4, 2018

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Last Updated: Jun 21, 2026

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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

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  • Evaluation of resource utility for molecular testing, metabolic diseases, and newborn screening.
  • Main Results:

    • Identified key web resources for genetic testing information.
    • Highlighted resources for understanding inherited diseases and metabolic disorders.
    • Included resources for newborn screening and genetic advocacy.

    Conclusions:

    • Web-based resources are vital for disseminating genetic information.
    • Effective use of these resources can improve patient care and genetic literacy.
    • A curated list aids professionals and the public in navigating genetic information.