64 MENDELISM chap. 



fashion, giving a generation consisting of sinensis, 

 intermediates, and stellata in the ratio i : 2 : i. 

 Subsequent breeding from these plants showed that 

 botii the sinensis and stellata which appeared in the 

 Fj generation bred true, while the intermediates 



Fig. 12. 



Primula flowers to illustrate the intermediate nature of the Fj (lou-er when sinensis 

 is crossed with stellata. 



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. 



Among birds a case of similar nature is that of 

 the Blue Andalusian fowl. Fanciers have long 



