96 



Tufi INHteRltANCfi OF CHARACTERS IJJ RtCfe 



Tlie second half of Table XIV shows exactly similar results obtained in a 

 totally unrelated group. The comiiosition of No. 190, Fo, was not ascertained 

 except that it was giving a 9 : 7 ratio of pigmenled : unjiigmenled plants, in 

 which connexion it has alread)' been considered. 



To return to the Dalwa cross, two F2 plants of the L G S A type proved to 

 be of tlje constitution LLGg SsAA. These may have been crosses, as the 

 Fi parent was not selfed, or they may have been due to failure of couphng of 

 L and G. Th«ir exact origin is immaterial to the present consideration. 

 viz., repulsion between G and S where both L and A are pure. 



The results given in F3 and F4 are shown in Table XV. 



Table XV. 



No explanation can be oiTered for the wide divergence of No. 577-N 

 from the ordinary ratio, but it has been disregarded in view of the fact that 

 the F4 families show only a slight tendency to such divergence. The figures, 

 on the whole, undoubtedly represen.t the ordinary 1:2:1 ratio, showing 

 simple repulsion between G and S, with no complication due to couphng. 



A similar example of simple repulsion, but this time between L and S, 

 was furnished by an aberrant plant of the L g S A type arising from No. 568-N 

 of Table XIV. The constitution of this plant appears to have been L 1 g g S s 

 A A and simple repulsion between L and S resulted in the usual 1:2:1 

 ratio (Table XVI). 



Table XVI. 



