K. To YAM A 



377 



The moths derived from these yellow- and whitu-bluoded worms 

 were paired in the following ways : 



I ? White- blooded moths x g White-blooded 



II ? White „ „ X <f Yellow 



III ? Yellow ,, „ X i Yellow ,, 



IV ? Yellow ,, „ X <r ^Vhite „ 



They gave the results which are tabulated below : — 



IV 



I No. 6 yellow white yellow 



65 



55 



120 



As the Table shews, if yellow -blooded females (both homozygous and 

 heterozygous) are used, whether they are mated with their own males or 

 other white males, the results are always the production of brownish 

 or greenish yellow eggs which is a characteristic of the yellow-blooded 

 form. In like manner, white-blooded females mated with yellows 

 (homo- and heterozygous) or whites gave all whitish eggs, characteristic 

 of the white form. Thus we may say in thi^ case as in the other cases 

 before cited, the colour characteristics of the egg are not influenced by 

 the zygotic composition of the egg after fertilization, but by their 

 maternal zygotic constitution before fertilization, and therefore there is 

 no sign of male characteristics to be seen in the egg, but in the larval 

 stage their relation is quite Mendelian. 



Journ. of Gen. ii 26 



