Heredity 199 



"I have not yet seen the data for the third generation 

 of all these wheats, but those which are at hand are 

 decidedly interesting. The following are the data for 

 the third generation of the cross between Jones Winter 

 Fife (male) and Little Club (female). The fife is long- 

 headed and has velvet chaff (V) ; the Club short-headed, 

 and has glabrous chaff (G). Velvet proved to be domi- 

 nant over glabrous and the hybrids were intermediate in 

 length. Type I of the second generation included the 

 two types VL and VgL, since these could not be distin- 

 guished by external appearances. Seed of Type I pro- 

 duced in the third generation : 



PERCENTAGE OP TYPES 

 PLOT I = VL ll = GL 



1 87 13 



2 81 19 



Theory 83 1 16f 



The figures for the remaining five second-generation types 

 are as follows : - 



TYPE II = GL 



PERCENTAGE OP TYPES 

 PLOT II 



1 100 



2 100 



Theory 100 



TYPE III = VI AND Vgl 



PLOT I II III IV V VI 



1 21 7 38 9 20 5 



2 W_ 4| 38_ 12 15 4| 



Theory 20 f 4| 41 f 8 20 f 4* 



