Talk:Animals/@comment-72.252.100.115-20111022064808/@comment-1716902-20111101191234

Genetics for black and white mice (in real life) work like this.

Each mouse has two colors, one from each parent. If it gets black from both, then it is Black. If it gets white from both, then it is white. If it gets one of each, then it is Gray.

So, two gray mice would have to be BW and BW. When they pass on their traits, you have a 25% chance of BB (Black), a 50% chance of BW (Gray), and a 25% chance of WW (White).

So, two gray mice having a white mouse is possible.