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Related Concept Videos

Karyotyping01:17

Karyotyping

Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
Dosage Compensation02:50

Dosage Compensation

In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with  distinct numbers of X chromosomes will have...

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Related Experiment Video

Updated: Jul 17, 2026

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
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Published on: February 21, 2015

[Advancement in the methods for gene dosage analysis].

Hui-li Ma1, Biao Chen

  • 1Department of Neurobiology, Beijing Geriatric Clinical and Research Center, Xuanwu Hospital of Capital University of Medical Sciences, Beijing, PR China.

Zhonghua Yi Xue Yi Chuan Xue Za Zhi = Zhonghua Yixue Yichuanxue Zazhi = Chinese Journal of Medical Genetics
|February 8, 2007
PubMed
Summary

Accurate gene dosage determination is crucial for understanding complex diseases caused by genomic variations. This review discusses advanced methods for reliable, sensitive, and high-throughput gene dosage analysis, aiding researchers in selecting appropriate techniques.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Medical Genetics

Context:

  • Gene dosage, the number of copies of a specific gene, is critical in understanding genome variation and rearrangements.
  • Large genomic duplications and deletions are increasingly identified as causes of complex diseases.
  • Current qualitative methods like PCR and sequencing are insufficient for detecting large genomic alterations.

Purpose:

  • To review and discuss recent advancements in gene dosage determination technologies.
  • To highlight the importance of reliable, sensitive, and high-throughput methods for gene dosage analysis.
  • To guide researchers in selecting suitable methods for their specific research needs.

Summary:

  • This review examines various high-performance technologies for gene dosage analysis, categorizing them into cytogenetic, blotting (Southern/dot), and PCR amplification methods.
  • It addresses the limitations of traditional qualitative methods in detecting large genomic duplications and deletions.
  • Recent technological developments and their applications in gene dosage studies are presented.

Impact:

  • Facilitates the selection of appropriate gene dosage analysis techniques for diverse research applications.
  • Enhances the understanding of genome variation and its role in complex diseases.
  • Supports the advancement of diagnostic and research tools for genetic disorders.