66 



THE INHERITANCE OF COLOR IN MICE. 



Pink-eyed broum agouti x broivn. 

 Cross 59. Both parents homozygous. YiBnBopiAiXYiBriDiPi. Expectation, Br^g only. 



Mating. 



360 



Parents. 



BrAg. 



p unmarked x 2393 . . . . i 1 



Cross 60. Homozygous pink-eyed brown agouti crossed with brown heterozygous in dark 

 eye. Y2Br2D2p2Ai x YiBviDiPp. Expectation, 1 BrAg, 1 pBrAg. 



VIII. Pink-eyed Dilute Brown Agouti, YBrdpA (Fig. 8). 



Eyes pink; ears, tail, and feet very lightly pigmented with brown. In both ventral and 

 dorsal hairs this form resembles a dull intense pink-eyed brown agouti, differing chiefly 

 in the comparative lack of bright yellow pigment and in the mealy, washed-out look. 

 The agouti pattern is very weak indeed. 



Pink-eyed dilute brown agouti X pink-eyed dilute broum agouti. 

 Cross 61. Both parents heterozygous in agouti. YiBridiP^A xYiBrid^piA. Expectation, 

 3 pdBrAg, 1 pdBr. 



Pink-eyed dilute brown agouti x dilute brown. 

 Cross 61a. Pink-eyed dilute brown agouti heterozygous in agouti crossed with dilute brown 

 heterozygous in dark eye. YiBrid2P2A x YiBridiPp. Expectation, 1 dBrAg, 1 dBr, 

 1 pdBrAg, 1 pdBr. 



Cross 61b. Both parents homozygous. Y2Br2d2PiA2XY2Br2d2P2. Expectation, all d5ri4^. 



