FURTHER DATA ON THE 
REDUPLICATION IN SILKWORMS. 
By 
Y. Tanaka. 
I. DISSIMILARITY OF MALE AND FI<:MALE GAMETIC 
SERIES IN THE STRIPED-YELLOW COUPLING. 
As I have made out in the separate paper now under preparation for 
press', the reduplication in the normal-yellow repulsion and the moricaud- 
yellow coupling in the silkworm is not of the same intensity in male and 
female, but it follows quite distinct systems among the opposite sexes. 
In such cases the reduplication was complete in female, and it was 
partial in male. The similar sexual dimorphism of gametic series exists 
also in the striped-yellow coupling which is dealt with in the following 
pages. 
In the previous paper '- I have described two families in which coupling 
occurred between striped and yellow, the actual numbers being 
Lot No. 
H. I'll 
Lot No. 
S. 5'ii 
Striped yellow 
(H. \'V2) 
148 
Striped yellow 
134 
Striped white 
(H. 2' 12) 
1 2 
Striped white 
10 
Normal yellow 
(H. I' 12) 
14 
Plain yellow 
7 
Normal white 
(H, 4' 1 2) 
50 
Plain white 
43 
Total 
224 
194 
1. Occurrence of Different Systems of Gametic Reduplication in Male and Female Hybrids. Zeits. 
f. ind. Abst. u. Vererb. 1914. 
2. Gametic Coupling and Repulsion in the Silkworm. This Journal, Vol. V, 1913. pp. 115-148. 
Jour. Coll. Agric. T. I. U. Sapporo. Vol. VI, Ft. i. March 1914. 
