Droso/iliild .]l( l(iii<)</<islir. :>(li) 



'r:il)lc XIV. Ilyl)i.-(1 9 (v(«sli(j:i:il 9 l)y ciirx fd , ; ) by .-urvrd d". 



Table XV. Hybrid cf (vestigial 9 by curved cf) by curved 9. 



It is evident that in order to hrins out the linkage value the double reces- 

 sive vestigial curved should be used in the back crosses. 



V. Behavior of ciirrcd iritli crosses hirolviiif/ hJnck. Clironiosoinc II. 



Black, a body color nnUjition. \v:is found by :\Iorg;iii. Its linkage shows it 

 to belong to Group II. The contrast lu'twcen the two characters makes 

 black a good character against which to test curved. 



1. Black 9 by curved cT. 

 The gray (wild type color) curved ,^ mated to the straight (wild type 

 wing) black 9 gave 12 wild sons and i:'. wild daughters. Thes{> inbred pro- 

 duced au F; generation classified in table XVI. 



