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Gene expression variation across genetically identical individuals predicts reproductive traits
Biorxiv : the Preprint Server for Biology
|October 24, 2023
Summary
Individual differences in gene expression, not genetics, significantly impact traits. This study in C. elegans reveals non-genetic factors like gene expression are highly predictive and causal for reproductive traits.
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- Genome-wide association studies (GWAS) have limitations in predicting complex traits influenced by environmental factors.
- Individual differences in traits persist even among genetically identical individuals, highlighting the role of non-genetic factors.
- Separating genetic and environmental contributions to trait variation remains a challenge.
Conclusions:
- Individual, non-genetic differences in gene expression are significant drivers of phenotypic variation.
- Gene expression patterns can be highly predictive and causally influence complex traits.
- Chromatin structure may play a role in regulating the gene expression variation underlying individual differences.
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