[R-sig-ME] MCMCglmm question

[Szymek Drobniak]

Hi,

I've been a bit confused by different wyas we specify random effects
in lmer and MCMCglmm i just want to clear something. When I want to
look for  intersexual genetic correlations in the trait, is it
equivalent to treat this trait for opposite sexes as separate traits
and include the term idh(trait):animal - to treating this as a single
trait and fitting idh(sex):animal? Do these two ways of specyfying
random effects differ in this case? Are the calculations of rG correct
in the second case?

Cheers,
sz.