86 



Tabulation of Data. 



Exp. 46. — Yellow crossveinless vermilion magenta forked. — Continued. 

 Mating: yellow crossveinless X vermilion magenta forked. 



Per cent cross-overs: y-c, 18.3; c-v, 0.6; v-m, 35.0, m-f, 2.0. 



Exp. 47. — Yellow vesiculated magenta forked ritgose. 

 Mating: yellow magenta X vesiculated forked rugose. 



Per cent cross-overs: y-vs, 20.8; vs-m, 31.6; m-f, 4.7; f-r, 27.2; counting only vs flies, y-vs, 

 21.2; vB-m, 43.2. 



