GAMETIC C OUPLING AND REPULSION IN THE SILKWORM. 131 



Thus all of the striped larvae were yellow, while the normal individuals 

 were all white with no exception. 



As the maternal striped yellow (S. 5. '11) is heterozygous in the marking 

 and colour, as stated before, and the paternal homozygous in both of these 

 characters, we have no way of interpretation of the above result except by 

 supposing that there occurred a complete coupling between striped and yellow 



