Chromosomal Rearrangements and Gene Evolution in Humans and Chimpanzees
Author Information
Author(s): Marques-Bonet Tomàs, Sànchez-Ruiz Jesús, Armengol Lluís, Khaja Razi, Bertranpetit Jaume, Lopez-Bigas Núria, Rocchi Mariano, Gazave Elodie, Navarro Arcadi
Primary Institution: Universitat Pompeu Fabra
Hypothesis
Is there an association between chromosomal rearrangements and rates of DNA sequence evolution in humans and chimpanzees?
Conclusion
Divergence is lower for genes located in rearranged chromosomes than for those in colinear chromosomes.
Supporting Evidence
- Genes in rearranged chromosomes showed lower non-coding divergence than those in colinear chromosomes.
- Chromosome 4 presented higher divergence in genes located within its rearrangement.
- Non-coding regions within rearranged regions tend to have lower divergence than non-coding regions outside them.
Takeaway
This study found that genes in rearranged chromosomes of humans and chimpanzees change less over time compared to genes in regular chromosomes.
Methodology
The study compared rates of DNA sequence divergence in rearranged and colinear genomic regions using available genome sequences.
Potential Biases
Potential biases from small sample sizes and previous data limitations were acknowledged.
Limitations
The analysis was limited by the removal of genes linked to sex chromosomes, segmental duplications, and other factors that could affect divergence rates.
Statistical Information
P-Value
< 0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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