GYNANDROMORPHISM 



163 



entering sperm should fail to reach the egg nucleus 

 before it divides, it may then fuse with one of the 

 halves of the egg nucleus after that divides. From the 



V 



FIG. 82. Two gynandromorphs of Drosophila ampelophila. Upper 

 left-hand figure, female dorsally, male ventrally (as seen in third figure, 

 lower line). Upper right-hand figure, male on left side, female on right, 

 and correspondingly the under side shows the same difference (lower row, 

 last figure to right. Lower row from left to right; normal female, normal 

 male, vertical gynandromorph and lateral gynandromorph. 



half of the egg containing the double nuclei female 

 structures will develop ; frojjri the other half, contain- 

 ing the half number of chromosomes, male structures 

 (Fig. 83, A). Here we ha^a very simple explanation 

 of the gynandromorphism. 



