Differences in Histone Modifications in Human Duplicated Genes
Author Information
Author(s): Zheng Deyou
Primary Institution: Albert Einstein College of Medicine
Hypothesis
Are the derived sequences of segmental duplications less functional and more likely to degenerate compared to their original counterparts?
Conclusion
The study shows that derived sequences of segmental duplications are more likely to become non-functional than the original sequences.
Supporting Evidence
- The analysis revealed that derivative loci of segmental duplications often differ significantly from the original with respect to many histone methylations.
- Genes are present three times more frequently in the original than in the derivative, while pseudogenes are more common in the derivative.
- The study found that the asymmetries in histone modifications increase with the age of segmental duplications.
Takeaway
This study found that even though two copies of DNA look the same, they can behave very differently, with one copy often losing its function over time.
Methodology
The study used ChIP-Seq data to analyze histone modifications in segmental duplications across the human genome.
Potential Biases
Potential bias in the data due to the reliance on specific genomic regions and the methods used for identifying segmental duplications.
Limitations
The study's findings are limited by the inability to accurately identify the direction of duplications in all cases.
Statistical Information
P-Value
3e-10
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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