GAMETIC COUPLING AND REPULSION IN THE SILKWORM. 
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IX. Summary. 
1) Few examples of gametic coupling and repulsion, other than those 
which occur in connectien with the sex-factor, have been found hitherto in 
animals. 
2) I have ascertained however that the phenomena of coupling and 
repulsion of certain somatic characters occur in the Silkworm as they do in 
plants. 
3) Partial coupling in the Silkworm occurred a) between the moricaud 
marking and yellow colour, and also b) between the striped marking 
and yellow colour. These are, so far as I am aware, the first record 
of partial gametic coupling found in animals. 
4) The gametic system on which the partial coupling occurred in the 
Silkworm in my experiments was presumably of the 7 5 1:1:7 type in either 
of both cases stated above. 
5) Complete coupling took place between the striped marking and 
yellow colour. 
6) Complete repulsion was found to occur a) between the normal 
marking and the yellow colour, b) between the striped marking and the 
yellow colour, and c) between the striped and normal markings. 
March , 1913. 
