HEREDITY AND VARIATION 



(^ 



fx 

 B' 

 fu 



car 



bb- 



rb' 



of -- 20.0 cut(W) 

 sn - 21.0 singed (H) 



Iz f 27.7 lozenge (E) 



33.0 vermilion (E) 



36.1 miniature (W) 



43.0 sable (B) 

 44.4 garnet (E) 



b 



Bl\ 



-56.7 forked (H) 



-57.0 bar (E) 



59.5 fused (V) 



62.5 cornation ( E ) 



:66.0 bobbed (H) 



hy 



px 



bw 

 sp 



31.0 dachs(B) 



48.5 

 /51.0 



54.5 



^54.8 



"^55.0 

 57.5 



72.0 

 75.5 



jammed (W) q 



th ; 



sf/ 



black (B) D 

 reduced (H) P^ 



purple (E) cu 

 bristle (H) 



light (E) sb^ 



cinnabar (E) ss- 



bx^ 

 engrailed (B) sr 



gl^ 

 vestigial (W)^l 



Hx 



lobe(E) 

 curved (W) 



93.3 humpy (B) 



100.5 plexus (W) ca -|- 100.7 claret (E) 

 100.7 brown (E) 



-*- 107.0 speck (B) 



Mg 



43.2 



N4.O 



"47.5 



"48.0 



50.0 



/58.2 

 ^58.5 

 ^58.7 



62.0 

 ^63.0 



66.2 

 /69.5 



70.7 



roughcid(E) bt/ii^O bent(W) 



veinlet ( V ) ci| ' V cubit, interr. ( V ) 



\0.1± shaven H 



0.1± eyeless (E) 



19.2 javelin (H) 



26.0 sepia (E) 

 26.5 hairy (H) 



-dichaete (H) 

 -glued (E) 



thread 



scarlet ( E ) 



deformed (E) 

 pink (E) 

 curled (W) 



stubble (H) 

 spineless (H) 

 bithorax (B) 

 stripe (B) 

 glass (E) 

 delta (V) 

 hairless (H) 

 ebony (B) 



74.7 cardinal (E) 



91.1 rough (E) 



106.2 niinute-g(H) 



Fig. 6.16. Maps of the four chromosomes of the haploid set in Drosoplnla; the genes located 

 in any one chromosome and their allelomorphs constitute a linkage group. Chromosome 1 is 

 the X-chromosome, and 4 is the small round one (cf. Fig. 2.\2D, p. 42, and Fig. 6.19.4). 

 Letters in parentheses indicate part of fly where effect of mutant gene is observed: B, body; 

 E, eyes; //, bristles; \\ venation of wings; W, wings. The positions of association with 

 the spindle (cf. p. 41) are indicated by arrows. (After C. Bridges, from A. H. Sturtevant and 

 (j. W. Beadle, An Introduction to Genetics, copyright 1939 by W. B. Saunders Co., printed b\- 

 permission.) 



191 



