J^ 



Products of the Masked Heterozygo 



of the Normal Hete 



This array in fz and through subsequent generations 

 continues to breed true to type" appearing uniformiy as 

 an extracted 'sig type". Is not the same as extracted sig- 

 type of other class of Ff heterozygotes. True condftion 

 of the popu/ation is shown in this figure. 



Ex tra c tec/ fz Majked fz 



sig. type Heterozygote 



Pu'£lp-Ac-Ac£lp-f^ Pu-Elp-AcAc'flp'f^ 



Masked Fz 

 Extracted di^ type 



Pu-flp Ac-Ac Elp-Pu 



Extractsd Fz sig'type. 

 Breeds true and is 

 pure for characters 

 shoivn and like 

 parent sig. stock. 



Extracted F2 



sig type 

 PuEip'AcAcflpFu 



Fz heterozygous type Extracted div. type . 

 gives tn /5 duplicate Breeds true and is 

 of the Fz array and pure for characters 

 so on shown and is like 



paren t div. stock . 



Fz heterozygote 



orm.d.type 

 PuElpAcAc'Elp-Pu 



appea 



Gametes. 



F, 

 Zygotes. 



•ion of these gametes produces a masked /^ array that 

 oear as all ofthe sig- type. True compositions shown above. 



Extracted Fz 



div. type 



Pu-Elp-Ac'Ac-E/p-^ 



Union of these gametes produces a typical Fz array of these type. 



h-Elp-Ac Ac'Elp^Pu AcElp-Po AcElp 



@ - 



Pu^Elp-Ac AcElp:Fh Pu-Elp-Ac Ac-flp-Pu 

 divXv fsigS (di^V 



These gametes when crossed under conditions of experiment 

 gives in F/ two types of heterozygotes in about eij/ual numbers 



Zygote 



Schematic representation of results obtained in crossing i. signaticollis and L. diversa \ 



THE SAME conditions AS SHOWN IN PLATE 9, BUT REPRESENTING BEHAVIOR OF GAMETES AND CHARACT 

 COMBINATIONS WHICH HAVE BEEN SHOWN TO RESULT. 



