Tabulation of Data. 



79 



XIV. TABULATION OF LINKAGE EXPERIMENTS. 



Linkage Experiments on Sex-Linked Genes (Group 1). 



(Experiments 1 to 53.) 



Exp. 1. — Sepia vermilion. 

 Mating: sepia X vermilion. 

 6 cultures (E 625-6, 535-6, 545-6). 



Non-cross-overs (se 191; v 226) 417 



Cross-overs (se v 60; -f 68) 128 



Total 



Per cent cross-overs, se-v, 23.5. 



545 



Exp. 2. — Frayed forked. 

 Mating: frayed X forked. 

 3 cultures (V 812. 815, 827). 



Non-cross-overs (fd 72; f 61) 133 



Cross-overs (fd f 47; -h 74) 121 



Total 254 



Per cent cross-overs, fd— f, 47.6. 



Exp. 3. — Yellow crossveinless. 

 Mating: yellow crossveinless X wild-type. 

 5 cultures (P 833-837). 



Non-cross-overs (y c 159; + 161) 320 



Cross-overs (y 40 ; c 46) 86 



Total 



Per cent cross-overs, y— c, 21.2. 



406 



Exp. 4. — Yellow vermilion. 



Mating: yellow X vermilion. 



6 cultures (P 656, 681, 693-4, 722. 725). 



Non-cross-overs (y 176; v 167) 343 



Cross-overs (y v 44 ; + 45) 89 



Total 432 



Per cent cross-overs, y-v. 20.6. 



Exp. 5. — Vermilion vesiculated. 



Mating: vermilion X vesiculated. 



7 cultures (E 447-8, 473, 735-6, 747-8). 



Non-cross-overs (v 481 ; vs 463) 944 



Cross-overs (v vs 9; -|- 14) 23 



Total 967 



Per cent cross-overs, v— vs 2.4; counting 

 only vs, 1.9. 



Exp. 6. — Vermilion ringed. 



Mating: vermilion X singed. 



9 cultures (P 529-532, 538, 553, 682, 736-7). 



Non-cross-overs (v 344; si 309) 653 



Cross-overs (v si 75; -f 74) 149 



Total 802 



Per cent cross-overs, v— si 18.6. 



Exp. 7. — Vermilion short. 



Mating: vermilion X short. 

 14 cultures (P 543-7. 551-2. 562-5. M 40, 

 42, 62). 



Non-cross-overs (v 489; s 450) 939 



Cross-overs (vs 344; + 370) 714 



Total 



Per cent crose-overs, v— a 43.2. 



.1.653 



Exp. 8. — Vermilion triangle. 

 Mating: vermilion X triangle. 

 3 cultures (E 410-11. 446). 



Non-cross-overs (v 59; T 43) 102 



Cross-overs (v T 13 ; -f 52) 65 



Total 



Per cent cross-overs. v-T 38.9. 



167 



Exp. 9. — Vermilion glazed. 

 Mating: vermilion X glazed. 

 6 cultures (L 541. 541 (1). E 166. 179, 347-S). 



Non-cross-overs (v 70; r« 45) 115 



Cross-overs (v r" 30; -|- 55) 85 



Total 



Per cent cross-over, v— r» 42.5. 



200 



Exp. 10. — Singed triangle. 

 Mating: singed X triangle. 



4 cultures (M 27. 30. 32. 52). 



Non-cross-overs (si 38; T 44) 82 



Cross-overs (si T 18; + 36) 54 



Total 136 



Per cent cross-overs, si-T 39.7. 



Exp. 11. — Singed short. 

 Mating: singed X short. 



8 cultures (P 643-4, 650, 672-3. 704. M 91. 

 1246). 



Non-cross-overs (si 176; a 159) 335 



Cross-overs (si s 97; + 119) 216 



Total 551 



Per cent cross-overs, si-s 39.2. 



Exp. 12. — Singed droop. 



Mating: singed X droop. 

 2 cultures (M 44, 50). 



Non-cross-overs (si 26; d 17) 43 



Cross-overs (si d 12 ; + 25) 37 



Total 80 



Per cent cross-overs, si-d 46.2; counting 

 only d flies 41.3. 



Exp. 13. — Triangle short. 



Mating: triangle X short. 



5 cultures (M 41. 51. 64. 122. 198). 



Non-cross-ovcrs (T 152; s 124) 276 



Cross-overs (T s 8; + 8) 16 



Total 292 



Per cent cross-overs. T— a 5.5. 



Exp. 14. — Triangle rugose. 



Mating: triangle X rugose. 

 2 cultures (L 681. 690). 



Non-cross-ovcrs (T 72; r 81) 153 



Cross-overs (T r 7; -f- 8) 15 



Total 16S 



Per cent cross-overs, T-r 8.9. 



