CHROMOSOMES AND MITOCHONDRIA 263 
Ascaris 3 
Aye by © 
rd 
= ff NWre 
rT A © 
= 2s 
WN Ny-@ 
WN 
Fic. 68.— Maturation in Ascaris. Male above. Female below. Let- 
tering as in Fig. 65. (From Morgan's Heredity and Sez, published 
by the Columbia University Press.) 
