A Modification of the Sex Ratio, and of other 

 Ratios, in Drosophila through Linkage. 



T. H. MOEGAN. 



Two of the earliest mutations in wing-character that appeared 

 in cultures of the fruit fly, Drosophila, were called Miniature and 

 Rudimentary. The former designation has been found satisfactory, 

 since it describes the main features of the wings. These are like the 

 normal in form and venation, Figs. 7 — 8, but reduced in size. The 

 latter term, rudimentary, was a less happy choice, since other 





Text-Figs. I — 2. Fig. i. A typical rudimentary winged male. 

 Fig. 2. A typical rudimentary-miniature male. 



mutations have appeared that are more rudimentary, in the sense 

 of being less developed, than the one first designated rudimentary. 

 But after some hesitation I have concluded to let the first name 

 stand as it pretends to be nothing more than a descriptive term for 

 a certain kind of wing that is little more than a rudiment of the 

 normal wing. Fig- i. 



Induktive AbsL 



gs- und Vercrbungslclii 



