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Updated: Sep 5, 2025
08:35
Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
Published on: June 24, 2021
5.8K
Alternative splicing as a source of phenotypic diversity.
Charlotte J Wright1,2, Christopher W J Smith3, Chris D Jiggins4
1Tree of Life, Wellcome Sanger Institute, Cambridge, UK. cw22@sanger.ac.uk.
Nature Reviews. Genetics
|July 12, 2022
Summary
Alternative splicing, a process where genes create diverse proteins, is a key driver of evolutionary change and species adaptation. New sequencing technologies reveal its rapid evolution between closely related species.
Area of Science:
- Evolutionary genetics
- Molecular biology
- Genomics
Background:
- Phenotypic diversity in multicellular organisms arises from genetic processes.
- Alternative splicing generates protein diversity from single genes, contributing to phenotypic traits.
- Alternative splicing is known to drive major evolutionary innovations over long timescales.
Purpose of the Study:
- To investigate the evolutionary dynamics of alternative splicing over shorter timescales.
- To leverage recent advancements in sequencing and genome assembly for comparative analyses.
- To understand the role of alternative splicing in adaptation and species divergence.
Main Methods:
- Comparative analysis of splicing profiles between closely related species.
- Utilizing long-read sequencing technologies.
- Employing high-quality genome assemblies for diverse organisms.
Main Results:
- Recent technological advances enable detailed comparisons of splicing patterns in related species.
- Alternative splicing is emerging as a dynamic and rapidly evolving process.
- This evolutionary lability can contribute to adaptation and the divergence of species.
Conclusions:
- Alternative splicing is a significant factor in generating phenotypic diversity.
- It plays a crucial role in evolutionary adaptation and speciation.
- Its dynamic nature makes it a key area for studying short-term evolutionary processes.
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