54 



THE INHERITANCE OF COLOR IN MICE. 



Cross 1 G. Black agouti heterozygous in dark eye and agouti crossed with black heterozygous 

 in dark eye. YiBriB-iDiPpA x YiBriBiD^Pp. Expectation, ZBAg,ZB,\ pBAg, 1 pB. 



Matins 



Parents. 



BAg. B. 



132 

 128 

 129 

 97 

 179 

 165 

 177 



447 X 454 |. 1 



449 X 454 ! 3 



452 X 4.54 



447, 449 X 454 



447-449-452 x 454 



447 X 919 



452 X 919 



3 

 2 



19 20 



pBAg. ' pB. 



2 

 1 

 1 



I 1 



6 



Cross 17. Black agouti heterozygous in black, dark eye, and agouti, crossed withblack hete- 

 rozygous in black and dark eye. YiBr^BDiPpA xYiBroBD2Pp. Expectation, 9.6.4^, 

 9 jB, 3 pBAg, 3 pB, 3 BrAg, 3 Br, 1 pBrAg, 1 pBr. 



Cross 17a. Black agouti heterozygous in black, density, and agouti, crossed with black 

 heterozygous in density and black. YiBriBDdPiA xYiBrJiDdPi. Expectation, 

 9 BAg, 9 , 3 dBAg, 3 dB, 3 BrAg, 3 Br, 1 dBrAg, 1 dBr. 



Black agouti x brown. 



Cross 18. Black agouti heterozygous in black crossed with homozygous brown. 

 Y2Br2BD2P2A2 xY2Br2D2P2. Expectation, 1 BAg, 1 BrAg. 



Cross 18a. Black agouti heterozygous in black and agouti crossed with homozygous brown. 

 Y2Br2BD2PiA xY2Br2D2P2. Expectation, 1 BAg, 1 BrAg, 1 B, 1 Br. 



