CHRCK0S0US.-U1 
CHROMOSOME IT 
0.0\ 
0 
0.2 
1.5- 
3.0 
3.1- 
5.5 
7.3 
7.5 
13.7 
15.7 
20.0 
21.0 
27.5 
27.7 
36.0 
36.1- 
37.5 
38.0 
53.* 
54-5 
56.5 
57.0 
58.5 
59.5 
yellow » 
lethal 7 
broad ♦ 
prune •« 
■ white » 
notch + 
•abnormal 
echinus * 
bifid * 
ruby » 
crossreinless • 
club 
cut » 
singed 
tan « 
lozenge 
tiny-briatle» 
• miniature 
dusky ♦• 
furrowed 
sable ♦ 
garnet 
small-wing 
rudimentary 
forked • 
bar • 
small-eye • 
fused * 
45.0 ■ • cleft 
9.0 
11.0 
13.0 
14.0 
- ■ telegraph 
expanded 
■ truncate 
gull 
28.0 
29.0 
33.0 
35.5 
52.5 
58.0 
61.0 
65.0 
66.5 
67.0 
70.0 
71.0 4 
73.5 
85.0 
88.0 + 
97.5 
98.5 
100.0 
101.0 + 
10J.O 
104.5 
105.0 
10>.5 
flipper 
dacha + 
aki-II 
squat 
black 
jaunty 
purplfc|« 
safranin 
trefoil 
restigial * 
telescope 
dash 
lobe * 
minute-511 
minute-2 
humpy | 
purploid 
arc + 
plexua » 
letbal-IIa 
brown. + 
blistered 
•peck 
balloon 
25.3 
25.8 
32. o 
33.5 
34.0 
35.0 
38. J 
38.5 
40.5 
41.5 
43.0 
44.0 
45. C 
53.8 
54.0 
55.0 
56.0 
59.0 
60.0 
60.5 
61.0 
63.5 
65.5 
67.5 
68.0 
70.0 
72.0 
86.5 
89.0 
95.4 
95.7 
roughoid 
bent ♦ 
eyeless , 
sepia • 
hairy • 
divergent 
cream-III 
dwarfoid 
3carlet * 
maroon 
curled 
dwarf 
pink 
two- bristle 
spineless • 
bi thorax ♦ 
bithoraxoid 
glasa ♦ 
kidney 
giant 
spread 
delta ♦ 
hairless • 
CIII 
whita-ocelli • 
rough * 
beaded 
claret 
minute 
Fig. 1. Maps showing the distribution of mutant loci in the four chromosomes of 
Drosophila melanogaster (Oct. 15, 1920). 
[A f sign should be added to miniature (1,36.1) and gull (11,11.0), and a * sign to 
black (11,46.5), speck (11,105.0), pink (111,45.5), and claret (111,95.4).] 
