102 



S. IKEXO: 



Table III. 



Fj-geneiation (1917 



F3 -generation (1918). 



Lomo : 7-80 lieixsro) (s. Table III), so that the ratio of indiriduals in these 

 two classes of reds does not well agree with what we might expect theoretical- 

 ly, but much importance should not be laid on this fact in view of the small 

 number of individuals. 



Prom the above experiments we see that the difference between orange 

 and red is due to one factor which we call Jt and which changes the orange 

 caused br C into red. 



' Though, as may be .seen fn)ra the results in Fa-generation, there are two Idnds of reds 

 (homo- and heterozygous), they are collected in /•'.. under the cLias red, because they are not 

 exactly distinguishable from each other by their external appearance. 



t The parent prefixed with an * denotes one which has produced some unexpected indi\'idua!s 

 among its oflEspring. Thus, for instance, in this No. we find besides 3 oranses 1 red which was 

 quite unexpected. For the discus-sion of these phenomena s. pp. 121. 



