Related Experiment Video
Updated: May 24, 2026
22:27
Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.
Published on: May 6, 2010
Fractal genome sequences
1Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA. g-buehler@northwestern.edu
Gene
|February 21, 2012
Summary
Researchers identified GA-sequences as fractal genomic sequences found across many species. These naturally occurring markers may impact our understanding of genome evolution and help explore non-coding DNA regions.
Area of Science:
- Genomics
- Bioinformatics
- Evolutionary Biology
Background:
- Statistical analyses have long suggested fractal patterns within genome data.
- The precise nature and identification of these fractal DNA sequences remained elusive.
Purpose of the Study:
- To explicitly identify and characterize a class of fractal genomic sequences.
- To investigate the prevalence and potential applications of these sequences across diverse genomes.
Main Methods:
- Identification of specific DNA sequence patterns (GA-sequences).
- Analysis of genomic data from multiple species and kingdoms.
- Characterization of sequence distribution and properties.
Main Results:
- GA-sequences are explicitly identified as a class of fractal genomic sequences.
- These sequences are found densely scattered throughout chromosomes in numerous species, including humans.
- The fractal nature of GA-sequences is confirmed.
Conclusions:
- The discovery of GA-sequences provides concrete evidence for fractal structures in genomes.
- Their fractal properties may significantly influence theories on genome origin and evolution.
- GA-sequences serve as universal markers for exploring non-coding genomic regions.
Related Concept Videos
02:54Evolutionary Relationships through Genome Comparisons
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
02:51Multi-species Conserved Sequences
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
01:29Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
01:08Evolution of Microbial Genome
Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
01:05Maxam-Gilbert Sequencing
In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Challenges of the Maxam-Gilbert Method
The...
03:00Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.