13.7 

 \6.7 



20.0 

 21.0 



27.5 



33.0 



36.0- 

 36\1- 



37.5 

 38.0 



43.0 

 44.4 



53.5 

 5^.5 



56 



57, 



58, 

 59 



65.0 



croesTeinlese 



club 



cut 

 singed 



tan 



Term! lion 



•tiny-bristles 

 -miniature 



dusky 

 furrowed 



sable 

 garnet 



small-wing 

 rudimentary 



forked 

 bar 



small-eye 

 fused 



cleft 



CHROMOSOME IT 



2.0 telegraph 



0.0 



1.0 



^.0 expanded 



9.0 



11.0 



13.0 



14.0 



85.0 



88.0 



100.0 

 101.0 



103.0 

 104.5 

 105.0 

 105.5 



22.3 



28.0 

 29.0 



33.0 

 35.5 



44.0 



46.5 

 46.7 



48.5 

 52.5 



58.0 

 61.0 



65.0 



66.5 



67.0 



70.0 

 71.0 



73.5 

 75.0 



77.0 



95.0 



97.5 

 98.5 



star 

 aristaless 



truncate 



gull 



pink-wing 

 streak 



cream-b 



flipper 

 dachs 



ski 

 squat 



minute-6< 



black 



jaunty 



apterous 



purple 



eafranin 

 trefoil 



Testigial 



telescope 

 dash 



lobe 

 minute-5II 



curved 

 dacheoug 



roof 



tninute-2 

 humpty 



purpleoid 



aro 

 plexu6 



lethal-IIa 

 brown 



blistered 



morula 



speck 



Mkloon 



CHROMOSOME III 



0.0 roughoid 



CHftOMOSOVE IV 



25.3 

 25.8 



32.0 I- 



33.5 

 34.0 

 35.0 



38.3 

 38.5 



40.5 

 41.5 



43.0 



!*4.0 

 •+5.0 

 45.5 



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 



95.7 



0.0 



bent 

 eyeless 0.0 + 



sepia 

 hairy 



divergent 



cream-III 

 dwarfoid 



scarlet 



tilt 

 dichaete 



ascute 



deformed 



maroon 



curled 



dwarf 



pink 



tv/o-bristle 

 spineless 

 bi thorax 

 tithoraxoid 



glass 

 kidney 



giant 

 spread 



delta 



hairless 



ebony 

 band 



CIII 

 white-ocelli 



rough 

 beaded 



tlaret 



raim»t* 



hio. lo3. — The chromosome map of Drosophila melanogaster, showing the loci of the 



genes as determined by Morgan and his associates. Correcte'd to November. 1920. Figure 

 kindly furnished by Professor Morgan. 



