64 



THE INHERITANCE OF COLOR IX MICE. 



Brown agouti x brawn. 



Cross 51. Homozygous brown agouti crossed with homozygous brown YJSrtDtPtAt x 

 Y>BrJhl' 2 . Expectation, all BrAg. 



Cross 52. Brown agouti heterozygous in dark eye and agouti crossed with brown heterozy- 

 gous in dark eye }' J',iJ)4' pA xY^Br-iDsPp. Expectation, 3 BrAg, ■'> Br, 1 pBrAg, 

 1 pBr. 



Brown agouti x pink-eyed brown. 

 Cross 53. Both parents homozygous. YiBrzDiPzAz X YzBr%Dtp« 



Mating. Parents. BrAg. 



p2309x2131.. 4 



Expectation, all BrAg 



Brown agouti x dilute black. 



Cross 54. Brown agouti heterozygous in density and agouti, crossed with dilute black 

 heterozygous in black. YtBnDdPzA x Y^r%Ba\Pz. Expectation, 1 BAg, 1 dBAg, 

 1 B, 1 dB, 1 BrAg, 1 dBrAg, 1 Br, 1 dBr. 



Brown agouti x pink-eyed dilute brown. 

 Cross 54a. Both parents homozygous, YzBr.DiPoAo x Y 2 Br.>d>p>. Expectation, all BrAg. 



VI. Dilute Brown Agouti, YBrdPA (Fig. 6). 



Eyes brow r n; cars, feet, and tail lightly pigmented with brown. Ventral hairs dull fawn 

 Dorsal hairs showing the agout i pattern. The whole appearance is thatof aduil, faded, 

 intense brown agouti. 



