Hello,

I am trying to fit a simple ACE genetics model with twin data, but am
having difficulties implementing it in MCMCglmm. The data consist of both
MZ and DZ twin pairs. The MZ twin variance can be decomposed into ACE;  the
DZ variance can be partitioned into CE and twin/family specific variance
and unique genetic variance. I am unable to retrieve these components after
running a model where unit and twin level variance components are
estimated. Any thoughts on how to do this? Do I fix the DZ genetic variance
to be half of the MZ in the prior?

Many thanks,
Jackson

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