6 Inheritance in the Japanese Convolvulus. Part II 



are light magenta exclusively. The reason for this will readily be seen 

 when we compare the genetic constitutions of the F^ and A plants. 



2. i\ x5(=GgDdBbMm X GGDDbbmm). 



The results are shewn in Table IV. 



TABLE IV. 



Light Deep 



Light Deep Light Deep dark- Dark- dark- 



magenta Magenta magenta scarlet Scarlet scarlet red red red White Totals 



Green 8 6 12 4 7 9 9 11 15 81 



Yellow 0000 0000 



„ . ^ \ 5-063 5-063 10-125 5-063 5-063 10-125 10-125 10-125 20-250 

 Jiixpectea |^ 



In this case all plants have green leaves and we find magenta, scarlet, 

 and dark-red flowers in all their respective three tones. If we add 

 together individuals of each colour belonging to the same tone it will 

 be seen that the ratio magenta : scarlet : dark-red is 1:1:2, and in each 

 colour there are two plants of deep tone for each one of the two other 

 tones. Here again the facts are clearly in accordance with hypotheses 

 put forward. 



III. Fs, Fi, AND F^ GENERATIONS, ETC. 



I have made a series of breeding experiments on various families in 

 Fs, Fi, and F^ ; moreover, various crosses were made among the offspring 

 of the hybrids both with one another and with the original parents, the 

 offspring in each case being grown on. All these experiments have fully 

 borne out my interpretation above given, and since I have never en- 

 countered any contradictory case, I will not describe here details of all 

 these results, but simply some few selected examples. 



1. Green plant with magenta flower. 

 The results are shewn in Table V. 



