EXTENDED SERIES. 



71 



Cross 77. Both parents heterozygous in the color factor, black and dark eye. 



YBr 2 Bd 2 Pp xYBrMPp. Expectation, 27 dB, 9 dBr, 9 pdB, 3 pdBr, 16 W. 



Dilute black X pink-eyed block. 



Cross 78. Dilute black heterozygous in dark eye crossed with homozygous pink-eyed black. 

 Y 2 Br 1 B 2 fiiPp x YtBnBoD.pi. Expectation, 15, 1 pB. 



Cross 79. Dilute black heterozygous in black crossed with pink-eyed black heterozygous 

 in density and black. Y-iBrSdiPi x YoBr 2 BDdp;. Expectation, SB, 3 dB, 1 Br,ldBr. 



Dilute black x brown. 



Cross 80. Dilute black heterozygous in black, crossed with homozygous brown. 

 YiBriBdiPo x YiBroDoP,. Expectation, 1 B, 1 Br. 



Mating. 



Parents. B. Br. 



441 2563-64-89x4495.. IS 17 



Cross 81. Dilute black heterozygous in black crossed with brown heterozygous in density 

 YiBnBdiPi X Y 2 Br 2 DdP z . Expectation, 1 B, 1 Br, 1 dB, 1 dBr. 



