Additive vs. dominance two-allele genetic model by DIC

[This article was first published on Gregor Gorjanc (gg), and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)
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Two-allele model has alleles A1 and A2 and genotypes A1A1, A1A2, and A2A2. This model can be fitted using only additive effect (restricted model) or additve+dominance effect. (full model) The later model has one parameter more than the former. I was using this model lately and got weird DIC results – the full model had less number of parameters. Bellow is a simulation (using R and BUGS), that shows expected DIC results.
## Needed packages and functions
library(package="e1071")
library(package="doBy")
library(package="R2WinBUGS")

rvalue 

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