CHAP. VII 



DOMINANCE 



6 9 



giving a generation consisting of sinensis, intermediates, 

 and stellata in the ratio 1:2:1. Subsequent breeding 

 from these plants showed that both the sinensis and stel- 

 lata which appeared in the F 2 generation bred true, while 



fiod« 



Fig. 12. 



Primula flowers to illustrate the intermediate nature of the F 1 flower when sinensis is 

 crossed with stellata. 



the intermediates always gave all three forms again in the 

 same proportion. But though there is no dominance of 

 the character of either parent in such a case as this, the 

 Mendelian principle of segregation could hardly have a 

 better illustration. 



