-' 0.8 



1.» 



J- ■ — ;••* 



-(«t 



-17* 



y«ltow . 



scut* 

 (etkil - 1 

 brotct 

 prua* 



whj'tf 



fe^ , 

 AbnormM 

 ecKinua 



bifid 

 rub/ 



rvlcM 



-20.0 

 -21.0 



Cluk 



<l«ltu 

 cut , 



27.5 t»rv 



27.7 loic 



_^,^^5J_0 v«rmtliOii 



-set 



-43.0 



-M.4 



mmi&tur* 

 furrowe<l 



sable 



g&m«t 



65.0 cJcft 



^ 70.0 bobUi 



n 



— 00 telegrt^ 



2 Star , 



- - 3.t arisTiwt 



6^ •>^ai>iUd 



IM Gull . 



+ 130 TruneiK 



- - I4.« oachsous 



16.8 Straai 



31.0 dtcKs 



3&0 Ski-n 



410 Jammei 



46.i M.(«»U-« 



.r-4e.5 black 



^-48.7 jaunty 



.54.5 p-lJ* 



57.5 omaber 



6a* safranut 



4- 64.i pink-Kg 



670 vestigiel 



eat UW&lf* 



•\- 72.0 Lobe 



74t gap 



75.5 cary«t 



81$ fnagaj 



. - 9aO humfjp 



— 99 3 



— loas 



flOSO 

 '11051 



--I06.* 



r(07,i 



U07 



— 107 5 



.^- go roughoi^ 



20« 



-zoo 



-2«.S 



35 



3e5 



40.1 

 402 

 404 

 42 2 

 4+0 

 +6t 

 +6 5 

 4-75 

 480 

 49 7 

 /50.t 

 1500 



^ 



348 



620 

 63-1 



69 5 



70 7 

 720 



-757 

 -76.2 



luuy 



rose 



cneam-IH 

 Minute-h. 



tilt 



D>c>iaeTe 



tkread 



Scarlet 



warded 



5ki-m 



Dcforrned 



maroon 

 curled 



Hatr/.wing Sufi 



Stufctle 



spineless 



bithorax 



b(tKorax-D 



it' 



Stnbe 

 (i\t.i% 



662 Delta 



Hairlojs 

 to 



c«rc(rn •/ 

 wruta-ocelU 



09 ejp«/«u 



Figure 38. Maps of the four chromosomes of Drosophila melano- 

 gaster, after Morgan, Bridges and Sturtevant, The Genetics of Droso- 

 phila. The genes are named for certain bodily characteristics which 

 they produce when modified in a certain way. Names beginning 

 with a lower case letter are recessive genes ; those beginning with 

 a capital are dominant. The numbers opposite each name show in 

 units of equal length the distance of the gene from the upper (or 

 "left") end of the chromosome. In the spaces between the indicated 

 genes are presumably other genes, not yet studied. 



161 



