New Genes in Neural Crest Evolution
Author Information
Author(s): Martinez-Morales Juan-Ramon, Henrich Thorsten, Ramialison Mirana, Wittbrodt Joachim
Primary Institution: Developmental Biology Unit, EMBL, Heidelberg, Germany
Hypothesis
The evolution of the neural crest is linked to the emergence of new signaling peptides that control lineage diversification.
Conclusion
The study proposes that the evolution of the neural crest is associated with both the recruitment of ancestral regulatory genes and the emergence of new signaling peptides.
Supporting Evidence
- 9% of neural crest genes are vertebrate innovations.
- The neural crest exhibits a high rate of gene emergence during vertebrate evolution.
- Half of the new neural crest genes encode secreted cytokines that control cell specification.
Takeaway
Scientists found that new genes helped the neural crest, a special group of cells in animals, to develop and diversify into different types of cells.
Methodology
The study used a bioinformatics approach to analyze the phylogeny of tissue-specific developmental programs and gene emergence rates.
Potential Biases
Potential bias due to arbitrary definitions of gene networks and gene loss in sister phyla.
Limitations
The study is limited by the quality of available genomic resources and potential biases in gene loss across different species.
Digital Object Identifier (DOI)
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