120 SEX INHERITANCE 



and gave rise to the female parts of the gynander, 

 while the other nucleus carried only the yellow 

 white X and gave rise to the male parts of the 

 gynander. 



Another gynander, shown in B, Fig. 36 G, started 

 as an XX zygote that received the three characters 

 cherry (recessive) abnormal-abdomen (dominant) 

 and forked (recessive) from the mother, and ver- 

 milion (recessive) from the father. The female 

 parts show the dominant abnormal-abdomen. There 

 was elimination of a daughter vermilion X-chro- 

 mosome at the first, perhaps at the second nuclear 

 division, so that the male parts show all three 

 maternal characters cherry abnormal and forked. 

 Both fore-legs were male (sex-combs and forked 

 bristles); the right side of the thorax was male 

 (smaller size, smaller bristles and hairs, forked 

 bristles, smaller wing); the right side of the head 

 was male (cherry eye-color, forked bristles, etc.), 

 except for a tiny island of female tissue, red in 

 color, in the rear margin of the eye. The abdomen 

 was male on the right side as shown by the smaller 

 size, the more extreme abnormality, and somewhat 

 by the coloration. 



In other gynandromorphs the anterior parts may 

 be female and the posterior male, or vice versa. 

 Only one quadrant may be male and the rest female, 

 or even smaller portions may be male, according to 

 whether elimination occurs at an early or a later 

 cleavage. Islands and streaks of one sex and the 

 irregular dividing line sometimes seen in the head 



