Linear mixed models (LMMs) using genome-based restricted maximum likelihood (GREML) allow both fixed and random effects. Classic LMMs assume independence between random effects, which can be violated. To relax the assumption, we introduced a generalised GREML, named CORE GREML, that explicitly estimates the covariance between random effects. This dataset includes MTG2 code and instruction for CORE GREML.

The code was written in fortan program language.