76 



THE INHERITANCE OF COLOR IN MICE. 



Cross 96. Both parents heterozygous in density and dark eye. Y^BriDdPp x YiBriDdPp. 

 Expectation, 9 Br, 3 dBr, 3 pBr, 1 pdBr. 



Brown x pink-eyed brown. 



Cross 97. Brown heterozygous in density, dark eye and the color factor, crossed with pink- 

 eyed brown heterozygous in density and the color factor. YBriDdPp x YBr-iDdpi. 

 Expectation, 9 Br, 9 pBr, 3 dBr, 3 pdBr, 8 W. 



Brown x pink-eyed dilute hroxon. 

 Cross 97a. Both parents homozygous. Y2Br2D2Pj. X Y2Brid2p2. Expectation, all Br. 



Cross 97b. Brown heterozygous in density crossed with homozygous pink-eyed dilute 

 brown. YiBr^DdP^ x Y2Br2d2P2. Expectation, 1 Br, 1 dBr. 



XIV. Dilute Brown, YBrdP (Fig. 14). 



Eyes brown; ears, tail and feet, as in the dilute brown agouti, are lightly pigmented with 

 brown. Ventral hairs pale fawn. Dorsal hairs dull, washed-out brown, at times 

 resembUng a dark, pink-eyed black in general superficial coloration. Ear tufts barely 

 distinguishable from the rest of the coat. The skin is moderately pigmented with brown . 



Dilute brown x pink-eyed brown. 



Cross 98. Both parents homozygous. Y^Br^diP, x Y2Br2D2p>. Expectation, all Br. 



