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Related Concept Videos

DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
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DNA Packaging00:58

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The DNA Helix01:16

The DNA Helix

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The DNA Helix01:07

The DNA Helix

Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...

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Updated: Jun 24, 2026

Analyzing and Building Nucleic Acid Structures with 3DNA
16:24

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Published on: April 26, 2013

The structural complexity of DNA templates--implications on cellular complexity.

G Yagil1

  • 1Deptartment of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 76100, Israel.

Journal of Theoretical Biology
|April 14, 2009
PubMed
Summary
This summary is machine-generated.

Genomic DNA sequences exhibit high complexity, driven by base composition, reflecting their role in cellular regulation. This complexity is crucial for cellular functions, development, and evolution.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • A quantitative procedure for evaluating molecular and biostructure complexity was previously developed.
  • Genomic DNA sequences are fundamental to cellular function and regulation.

Purpose of the Study:

  • To apply a quantitative complexity evaluation procedure to selected genomic DNA sequences.
  • To assess the complexity of bacterial, yeast, and human DNA segments.

Main Methods:

  • Utilized a previously formulated quantitative complexity evaluation procedure.
  • Employed Lempel-Ziv (LZ) complexity analysis for validation.
  • Analyzed E. coli genes (lacI), yeast telomere, and human p53 gene segment.

Main Results:

  • E. coli genes demonstrated near-maximal complexity (relative complexity ≈ 1).
  • Yeast telomere exhibited reduced complexity due to regular features.
  • Human p53 gene showed high complexity, with interspersed Alu elements slightly reducing it.
  • LZ compression analysis validated the high complexity of p53 transcribed regions.

Conclusions:

  • DNA base sequence composition is the primary determinant of cellular complexity.
  • The high complexity of DNA stems from its template nature and regulatory role.
  • DNA-templated systems display remarkable environmental responsiveness, intertwining cellular complexity with template activity.