p. a. Bailey •22:J 



hich would give rise to the following secondary gametic series: 



These gametic series would give rise to zygotic series, which agree 

 fairly closely with those actually observed, cf. Punnett (3), p. 81 : 



BL : Bl : bL : bl 

 BE : Be : bE : be 



EL : El : eL : el 



479 : 58 : 66 : 143 observed 



490 : 68 : 68 : 122 calc. 



532 : 5 : 6 : 203 

 554,:S'7:S'7: 18^ 



479 : 59 : 66 : 142 

 JfdO : 68 : 68 : 122. 



(ff) Nature of mating BeL x bEI. 



The observed BL relationship is most accurately explained on the 

 basis of a 10 : 1 : 1 : 10 series, and the EL relationship onal:12:12:l 

 series, but it is by no means impossible that these gametic series are 

 in reality of the same intensity. It will be assumed for the sake of 

 simplicity that they are. 



The equations may then be written 



The only value of /• which would be of a simple nature and would 

 approximately satisfy these equations is / = 3. Then the observed 

 secondary relations between B and L and E and L must be of a type 

 with less intensity than 9 : 1 and greater intensity than 8:1. 



The observed (cf' (3), p. 83) and calculated zygotic series are given 

 below : 



BL Bl hL hi ^^^^ ■ ^^^ '• ^^^ ' ^^^ observed 



• I : OL : Dl :: ^^^^ ^ ^^^ ^ ^^^ _ ^.^ ^^^^ 9:1:1:9 basis 



EL • El ■ L ^^^^ • ^^^^ • ^^^^^ • ^ observed 



■ ■ ® '''' 21So : 1040 : 10^0 : IW 6 calc. 



