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Reconstruction of the ancestral metazoan genome reveals an increase in genomic novelty

Paps, Jordi and Holland, Peter WH (2018) 'Reconstruction of the ancestral metazoan genome reveals an increase in genomic novelty.' Nature Communications, 9. ISSN 2041-1723

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Abstract

Understanding the emergence the Animal Kingdom is one of the major challenges of modern evolutionary biology. Many genomic changes took place along the evolutionary lineage that gave rise to the Metazoa. Recent research has revealed the role that co-option of old genes played during this transition, but the contribution of genomic novelty has not been fully assessed. Using extensive genome comparisons between metazoans and multiple outgroups we infer the minimal protein-coding genome of the first animal, in addition to other eukaryotic ancestors, and estimate the proportion of novelties in these ancient genomes. Contrary to the prevailing view, this uncovers an unprecedented increase in the extent of genomic novelty during the origin of metazoans, and identifies 25 groups of metazoan-specific genes that are essential across the Animal Kingdom. We argue that internal genomic changes were as important as external factors in the emergence of animals.

Item Type: Article
Subjects: Q Science > QH Natural history > QH426 Genetics
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Elements
Date Deposited: 01 May 2018 15:42
Last Modified: 05 Jun 2018 11:15
URI: http://repository.essex.ac.uk/id/eprint/21780

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