sport in Melasonia and its Behavior in Heredity 235 



4 Extracted B (Bfrom ABxAB) transmits the sport character. 

 For sixth generation data the following categories of matings 

 were made: 



Category a SxS, of ABxS parents. 



b ABxAB,ofAB and AB parents. 



c B xB of AB xAB parents. 



d B '06 xAB — the latter of AB xAB parents. 



The following table shows the results of these matings: 



TABLl': V {Sixth Generation) 



Comparing similar categories in Tables IV and V, we find a 

 similarity of results from similar conditions. 



1 Hybrid S (Table V, category a, and Table IV, /) produces 

 either mixed broods with S predominating or broods wholly S. 



2 B extracted from AB (from broods indicated in Table IV, 

 category z) transmits AB in the succeeding generation (Table V, 

 category c) not breeding true as it does when extracted from S. 



3 AB becomes practically pure in the sixth generation (fifth 

 generation from the sport). (Table V, category b.) 



4 Pure B is again completely dominant over AB in a cross 

 between B and AB (Table V, category d), as in Table II, b. 



