For instance, in normal, healthy mice, the agouti genes are kept in the "off" position by the epigenome, which attaches methyl groups to the corresponding regions of DNA, resulting in the DNA's ...

The remaining male pup developed into a fertile adult male with the same agouti coat colour as the B6C3F1 tail-tip cell donor. As oocytes of B6D2F1 mice do not carry the agouti mutation ...