GENETICS: W. E. CASTLE 
27 
0.0 
0.7 
1.1 
1.1 
2.2 
2.4 
2.6 
3.3 
6.3 
14.6 
16.7 
17.5 
17.8 
18.0 
19.5 
23.7 
26.5 
33.0 
33.1 
34.7 
36.1 
38.0 
Yellow, spot 
Lethal I 
Letha! lb 
White, ecsin, cherry 
Facet 
Abnormal 
Notch 
Lethal la 
Bifid 
12.5 - - Lethal II 
Lctha! sb 
C'ub 
Lemon 
Shifted 
Depressed 
Lethal Ilia 
Lethal sa 
Lethal In 
Vermilion 
Dot 
Reduplicated 
Miniature 
Furrowed 
- - Sable 
4 
65.1 
56.5 
57.0 
59.5 
66.2 
Rudimentaiy 
Forked 
Fused. 
Lethal sc 
Diagram I. 
"Diagram I shows the relative positions of the genes of the sex-linked characters of 
Drosophila. One unit of distance corresponds to 1% of crossing-over." 
Morgan and Bridges, p. 23. 
