58 



THE INHERITANCE OF COLOR IN MICE. 



Dilute black agouti x broum. 



Cross 28. Dilute black agouti heterozygous in agouti crossed with homozygous brown. 

 YiBrtBtdsPtA x Y 2 Br 2 D 2 P 2 . Expectation, 1 BAg, 1 B. 



.Mating. 



Parents. 



BAg. 



90 



It 



Unmarked x unmarked . . 3 



B. 

 1 



Dilute black agouti x pink-eyed dilute brown. 

 Cross 28 a. Both parents homozygous. Y iBr 2 Bid 2 P 2 A 2 xYiBrid.p*. Expectation, all dBAg. 



Cross 28b. Dilute black agouti heterozygous in agouti crossed with homozygous pink-eyed 

 dilute brown. Y 2 Br 2 Bid 2 P 2 A x Y 2 Br 2 d 2 p 2 . Expectation, 1 dBAg, 1 dB. 



Cross 28c. Dilute black agouti heterozygous in black crossed with homozygous pink-eyed 

 dilute brown. Y 2 Br 2 Bd 2 P 2 A 2 x Y 2 Br 2 d 2 p 2 . Expectation, 1 dBAg, 1 dBrAg. 



Cross 28d. Dilute black agouti heterozygous in black and agouti, crossed with homozygous 

 pink-eyed dilute brown. Y 2 Br 2 Bd 2 P 2 A x Y 2 Br 2 d 2 p 2 . Expectation, 1 dBAg, 1 dB, 

 1 dBrAg, 1 dBr. 



