p. (Jr. Bailev 223 



which would give rise to the following secondary gametic series: 



39 : 10 : 10 : 89 

 65 : 1 : 1 : 65 

 39 : 10 : 10 : 39. 



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

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



BL ; 81 : bL : bl 

 BE : Be : bE ; be 

 EL : El ; eL ; el 



479 : 58 : 66 : 143 observed 



4S0 : 68 : 68 : 1^2 cede. 



532 : 5 : 6 : 203 

 ■5o4- : '5'/' : o'7 : 184 



479 : 59 : 66 : 142 



A9U : 68 : 68 : J J.J. 



(/9) 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 on a 1 : 12 : 12 : 1 

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

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

 simplicity that they are. 



The equations may then be written 



111 + I 

 l-in + ni 



>32. 



11 



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



approximately satisfy these equations is Z = 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 : 



3006 : 164 : 212 : 843 observed 

 BL:BI:bL:bl;: ^^^^ , ^^^ , ,^^ . ^.^ ^^^^_ 9 : 1 : 1 : 9 basis 



2200:1001:1018: 6 observed 

 el :: ^^^. , ^^^^ . ^^^^ . ^y.^. ^^^^^. 



