The phrase "mouse gene" refers to a specific piece of genetic information found in mice. It represents a small part of the mouse's DNA that carries instructions for certain traits or characteristics. Full definition
To determine whether or not increased DNA gain or loss likely had an evolutionary impact we compared human and mouse gene expression divergence. (journals.plos.org)
The researchers found just fourteen mouse genes on mouse chromosome 16 that have no obvious counterparts in humans. (genomenewsnetwork.org)
By comparing the two genomes, researchers were able to discover 1,200 new human genes as well as 9,000 mouse genes never before identified. (sfgate.com)