Additive genetic covariance matrix
= Additive genetic covariance matrix
{title2=$\mathbf G$}
The <covariance matrix> of additive inherited contributions to a collection of <phenotypic traits>. Its diagonal entries are additive <genetic variances>; off-diagonal entries describe additive <genetic covariance>. It summarizes available local directions of response but can change as <allele frequencies> and associations change.