VII DOMINANCE 65 



recognised the difficulty of getting this variety to 

 breed true. Of a slaty blue colour itself with 

 darker hackles and with black lacing on the 



Sinensis X Stellata 



I 



Intermediate F, 



Sinensis Inter. Inter. Stellata F2 



Sinensis sin. Int. Int. Stell. Stellata F3 



Sinensis Stellata- F4 



feathers of the breast, it always throws " wasters " 

 of two kinds, viz. blacks, and whites splashed with 

 blue. Careful breeding from the blues shows that 

 the three sorts are always produced in the same 



Blue X Blue 



Black Blue X Blue White 



I r 



1 1 



Black Black Blue Blue White White 



Black X White 



Blue 



(all) 



definite proportions, viz. one black, two blues, one 

 splashed white. This at once suggests that the 

 black and the splashed white are the two homozy- 

 gous forms, and that the blues arc heterozygous, i.e. 



F 



