MUTATIONS IN EYE-COLOR OF DROSOPHILA. 



327 



Red & {out of R 9 XPc?)X Pink 9. 



T% aaI -. 



l 



9 



| < 



f 



j Total. 



Grand Total. 



Proportion of 

 Red to Pink. 



Bottle. 



Red. 



i Pink. 



Red. | Pink. 



Red. | Pink. 



A 

 B 



C 



123 



156 



57 



110 



141 

 23 



102 



142 



49 



98 

 114 



40 

 252 



225 



298 



97 



208 



255 



63 



433 

 553 

 160 



l.+ :l 

 1.2 :1 



1.5 :1 



Total 



336 



274 



| 263 



I 620 



526 



1,146 





Average proportion 



1.2 :1 









Red 9 {out of P 9 X R <?) X P * . 





Bottle. 



< 



? 



& 



Total. 1 



Grand Total. 



Proportion of 

 R«if l- Pink, 



Red. | 



Pink. 



Red. | 



Pink. 

 175 



64 

 48 

 77 

 102 

 68 



534 1 



Red. 



Pink. 1 



D 



E 

 F 



i 205 



127 



47 



142 



77 

 97 



169 

 73 

 45 

 63 

 99 

 87 



168 



124 



54 



139 



85 

 84 



373 

 251 

 101 

 281 

 162 

 181 



344 

 137 

 93 

 140 

 201 

 155 



717 

 388 



194 

 421 



383 

 336 



1.1 :1 

 1.8 :1 

 1.1 :1 

 2 :1 

 0.8 :1 

 1.1 :1 





695 1 



536 



654 I 



1,349 1 



1,070 | 



2,439 













Average proportion 



1.26:1 



Red cf {out of P 9 X R <?) X Pink 



Bottle. 



9 



tf 



Total. 



Grand Total. 



Proportion of 

 Red to Pink. 



Red. 



Pink. 



Red. 



Pink. 



Red. 



Pink. 



A 

 B 

 C 



125 



171 



65 



77 

 115 



28 



120 



156 



50 



326 



78 

 81 

 21 



245 

 327 

 115 



155 

 196 



49 



400 

 523 

 164 



1.5:1 



1.7:1 

 2.3:1 



1 



361 



220 



180 I 687 



400 



1,087 1 



Average proportion 



1.7:1 



The two counter-crosses were also made and are given in the two following 

 tables. In both cases the expectation is 3 Reds to 1 Pink. In one case the 

 ratio is 4 to 1 and in the other 3.4 to 1 . Again, the Pinks run behind, but the 

 ratios are not far from expectation . 



Bottle. 



A 

 B 



C 



Red. 



240 



573 



{out of P 9 X R o") X R cf {out ofR 



9 



Pink. 



30 

 49 

 44 



123 



cT 



Red. 



169 



192 



527 



Pink. 



46 

 42 

 61 



149 



Total. 



Pink. 



Average proportion 



■■» 



Proportion of 



rropo 

 Redt 



to Pink. 



4.4:1 



3.6:1 

 4.1:1 



4 :1 



I 



