EXTENDED SERIES. 73 



Cross 86. Both parents homozygous. YiBr2B2Di'Pi x YiBr-iDiP-i. Expectation, all B. 



Cross 87. Pink-eyed black heterozygous in black crossed with homozygous brown. 

 YiBriBD^Pi X YiBviDiPi. Expectation, IB, I Br. 



Cross 88. Pink-eyed black heterozygous in the color factor and black crossed with brown 

 heterozygous in color factor. YBriBD^pi x YBriDiPi. Expectation, 35, 3 Br, 2 W. 



Cross 89. Pink-eyed black heterozygous in black crossed with brown heterozygous in dark 

 eye. YzBriBDifi x YiBriD^Pp. Expectation, 1 B,l pB, 1 Br, 1 pBr. 



Pink-eyed black x dilute brown. 

 Cross 89a. Both parents homozygous. YiBriB^Dip^ x Y^Br^diPi. Expectation, all B. 



