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Related Concept Videos

Chromatin Position Affects Gene Expression02:35

Chromatin Position Affects Gene Expression

Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences  access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area. 
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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...
Karyotyping01:17

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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...
Polytene Chromosomes02:04

Polytene Chromosomes

Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...
Polytene Chromosomes02:04

Polytene Chromosomes

Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...
Chromosome Structure02:40

Chromosome Structure

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Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C
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Published on: October 14, 2022

Chromosome territories.

Thomas Cremer1, Marion Cremer

  • 1Biozentrum, Department of Biology II, Ludwig-Maximilians-University, Grosshadernerstrasse 2, 82152 Martinsried, Germany. thomas.cremer@lrz.uni-muenchen.de

Cold Spring Harbor Perspectives in Biology
|March 20, 2010
PubMed
Summary
This summary is machine-generated.

Chromosome territories (CTs) organize chromosomes within the nucleus across eukaryotes. Studies reveal their arrangement, internal structure, and dynamics during cell division and differentiation, impacting epigenomics.

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Area of Science:

  • Nuclear organization and epigenomics
  • Cell biology and chromosome structure

Background:

  • Chromosome territories (CTs) are fundamental to nuclear architecture.
  • Evidence confirms territorial organization in all studied eukaryotes.

Purpose of the Study:

  • To review the concept and evidence of chromosome territories.
  • To discuss CTs' contribution to epigenomics.
  • To explore CT arrangement dynamics and interactions.

Main Methods:

  • Review of historical and experimental evidence for CTs.
  • Analysis of current knowledge on CT arrangement and internal architecture.
  • Examination of CT dynamics during the cell cycle and differentiation.

Main Results:

  • Compelling experimental evidence supports chromosome territorial organization.
  • Nonrandom arrangements and internal CT architecture are established.
  • CT dynamics vary during the cell cycle and differentiation.

Conclusions:

  • Chromosome territories are a conserved feature of eukaryotic nuclear organization.
  • Understanding CTs is crucial for epigenomics.
  • Further research is needed to address open questions regarding CTs.