MENDELIAN SEGREGATION 



9 



mum 

 cnnTTUD 



Vestigial 



R 



czz? 

 ( ) 



Long 



r. 



c 



J 



Gametes or Fj 



c 



c 



3 



J 



a 



a 



) Eggs 



I) Sperm 



c 



c 



D 



3 



d 



C 



D) 



C ) 



mnnD 



(mum 



aiTTTTTTT) 



Fig. 3.— Vestigial winged by long winged (wild type) fly. The second 

 chromosome that carries the recessive factor for vestigial is cross-barred, 

 the corresponding chromosome of the normal is plain. 



