Related Experiment Video
Updated: Jun 24, 2026
09:45
Detection of Copy Number Alterations Using Single Cell Sequencing
Published on: February 17, 2017
Comparative analysis of copy number variation in primate genomes
H Kehrer-Sawatzki1, D N Cooper
1Department of Human Genetics, University of Ulm, Ulm, Germany. hildegard.kehrer-sawatzki@uni-ulm.de
Cytogenetic and Genome Research
|March 17, 2009
Summary
Researchers identified 24 chimpanzee-specific copy number variations (CNVs), suggesting these genomic differences are not abundant. These CNVs may reveal insights into primate evolution and human-specific genetic changes.
Area of Science:
- Genomics
- Evolutionary Biology
- Comparative Genomics
Background:
- Copy number variations (CNVs) are significant in human and chimpanzee genomes, often overlapping.
- Shared CNVs indicate unstable genomic regions prone to rearrangements during primate evolution.
- Lineage-specific CNVs may drive phenotypic diversity through positive selection.
Purpose of the Study:
- To identify chimpanzee-specific CNVs from existing data.
- To understand the evolutionary significance of CNVs in primate lineages.
- To investigate potential roles of CNVs in phenotypic differences.
Main Methods:
- Reinvestigation of chimpanzee CNV data from Perry et al. (2006).
- Identification of 24 potential chimpanzee-specific CNV regions.
- Analysis of CNV frequency within the chimpanzee population.
Main Results:
- Identified 24 potential chimpanzee-specific CNV regions, present in at least two individuals.
- These CNVs appear relatively frequent in the chimpanzee population.
- Several genes with known phenotypic or disease associations in humans map to these CNV regions.
Conclusions:
- Lineage-specific CNVs may not be abundant in chimpanzees, possibly due to detection methods.
- New mutation, genetic drift, and selection likely influence chimpanzee CNV maintenance.
- Characterizing CNVs in great apes is crucial for identifying human-specific CNVs under selection.
More Related Videos
09:32An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants
Published on: November 8, 2017
07:14A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains
Published on: January 16, 2026
Related Concept Videos
02:26Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
02:31Synteny and Evolution
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
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...
01:05Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
02:37Gene Duplication and Divergence
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
02:46Genome Copying Errors
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.