Partitioning the variation in mammalian substitution rates

Eyre-Walker, Adam and Smith, Nick G C (2003) Partitioning the variation in mammalian substitution rates. Molecular Biology and Evolution, 20 (1). pp. 10-17. ISSN 0737-4038

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Abstract

We have used analysis of variance to partition the variation in synonymous and amino acid substitution rates between three effects (gene, lineage, and a gene-by-lineage interaction) in mammalian nuclear and mitochondrial genes. We find that gene effects are stronger for amino acid substitution rates than for synonymous substitution rates and that lineage effects are stronger for synonymous substitution rates than for amino acid substitution rates. Gene-by-lineage interactions, equivalent to overdispersion corrected for lineage effects, are found in amino acid substitutions but not in synonymous substitutions. The variance in the ratio of amino acid and synonymous substitution rates is dominated by gene effects, but there is also a significant gene-by-lineage interaction.

Item Type: Article
Schools and Departments: School of Life Sciences > Evolution, Behaviour and Environment
Depositing User: Adam Eyre-Walker
Date Deposited: 06 Feb 2012 19:07
Last Modified: 18 Jun 2012 13:28
URI: http://sro.sussex.ac.uk/id/eprint/19345
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