In many cats and cat breeds, the agouti gene is suppressed, giving them a solid color. When it comes through, however, the agouti gene gives tabbies a beautiful striped appearance. And different ...

The mice are Agouti Viable Yellow, naturally occurring mutants, which, though genetically identical, have coats that vary in color—a phenomenon that researchers have long studied as an example of ...

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 ...