54 



THE INHERITANCE OF COLOR IN MICE. 



Cross 16. Black agouti heterozygous in dark eye and agouti crossed with black heterozygous 

 in dark eye. Y 2 Br 2 B 2 D 2 PpA xY 2 Br 2 B 2 D 2 Pp. Expectation, 3 BAg, 3B, lpBAg, \pB. 



Muting. 



Parents. 



132 



128 



129 



97 



179 

 165 



177 



447 x 454 



449 x 454 



452 x 454 



447, 449 x 454 ... . 

 447-419-452x454. 



447 x919 



452 x 919 



BAg. B. 



1 

 3 



3 

 2 



8 

 2 



pBAg. pB. 



19 20 



2 

 1 

 1 



1 



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

 rozygous in black and dark eye. Y 2 Br 2 BD 2 PpA xYtBnBDJ'p. Expectation, QBAg, 

 9 B, 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. Y 2 Br 2 BDdP 2 A xY 2 BriBDdP 2 . Expectation, 

 9 BAg, 9 B, 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. 

 Y 2 Br 2 BD 2 P 2 A 2 xY 2 Br 2 D 2 P 2 . Expectation, 1 BAg, 1 BrAg. 



Mating. 



526 



Parents. 



5943 x 4920 . . . 





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

 Y 2 Br 2 BD 2 P 2 A xY 2 Br 2 D 2 P 2 . Expectation, 1 BAg, 1 BrAg, 1 B, 1 Br. 



