64 



MENDELISM 



CHAP. 



fashion, giving a generation consisting of sine7isis, 

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

 Subsequent breeding from these plants showed that 

 both the smensis and stellata which appeared in the 

 F., generation bred true, while the intermediates 



Fig. 12. 



Primula (loweis to illustratt: tlic intermediate nature of tlie Fi dower when sinensis 



is crossed with sicUata. 



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 

 .ndalusian fowl. Fanciers have lons" 



