A GENEXICO-PHYSIOLOfilCVL STl'DY ON THE FORM.VTTON ETC. 



57 



The liyl)ricl between " Kari-matue " and " Akadzuka " in which the 

 yellow and reddish brown wo.e crossed, produced the yellow in tlie I<\ plant, 

 and in F., tli? following segregation was observed. 



Table 27. 



Showing the result obtiiinoil in the F< of tlie cross 

 " Kaii-mame " x ■' .ika.Tziika." 



The expected ratio is .3tj : 12 : 12 : 3 : 1. Here again the deeper brown 

 is shown to be recessive to lighter brown. A more detailed analysis of the 

 brown characters is under waj', and the result will be reported a^ data 

 become available. 



Speaking in general, tlie inhibited colour of the seed coat can be 

 guessed by the colour <>f tho hilmn and that of the naiTow ring around it. 

 In the present communication, the colour of the hihim and tha ring is not 

 considered. 



.3. Ax Interpretatiox of the Kesults. 

 It is a well known fact that there are at least two groups of genes 



