EXTENDED SERIES. 73 



Cross 86. Both parents homozygous. YiBr-iBiDipi x YiBrJDiPi. Expectation, all B. 



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

 YiBfiBDipi X YiBnDiPi. Expectation, 1 fi, 1 Br. 



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

 heterozygous in color factor. YBriBDiPi x YBrJiiPi. Expectation, ZB, 3 Br, 2 W. 



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

 eye. YiBr^BD^pa x YiBrAPp. Expectation, IB, I pB, 1 Br, 1 pBr. 



Pink-eyed black x dilute brown. 

 Cross 89a. Both parents homozygous. Y^BrzBJiiPi x YiBr^Pi. Expectation, all B. 



