THE Mi TATED GE VE 



29 



Fi<;. 11. — Three stages of development of a Btraplike Drosophila wing. Con- 

 siderable abnormality already at time of pupation. 'From Goldschmidt, 1937. 

 Univ. of Calif. Publ . Zbol., pi. 17. i 



Pto. 12. Development of t In- op-wing in Drosophila after pupation. Most 

 of the wing area destroyed before and much after pupation. ■/■" vm Qoldachmidt, 

 Biol. Centrbl. 55 54. 



