76 



THE INHERITANCE OF COLOR IN MICE. 



Cross 96. Both parents heterozygous in density and dark eye. YiBriDdPp x YiBr^DdPp. 

 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 YBriDdpt. 

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



Brown x pink-eyed dilute brown. 

 Cross 97a. Both parents homozygous. YiBrJ)JP-i x YiBr^dipi. Expectation, all Br. 



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

 brown. YJiriDdP^ x Y^BrodiPi- Expectation, 1 Br, 1 dBr. 



XIV. DiLTJTE 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 

 resembling 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. YiBrdiPi X YiBr^DiPi. Expectation, all Br. 



