Genetic analysis of hemolymph chymotrypsin inhibitors-3 and 4 in the silkworm, Bombyx mori
1996
Fujii, H. (Kyushu Univ., Fukuoka (Japan). Faculty of Agriculture) | Aratake, H. | Doira, H.
Out of 16 chymotrypsin inhibitors (CIs) present in the larval hemolymph of Bombyx mori, the 2 components CIs-3 and 4 were subjected to genetic analysis in the present study. These CIs were found to be controlled by a co-dominant autosomal gene named Ict-E, with the alleles for CIs-4 and 3 assigned to be Ict-E(F) and E(S), respectively, since CI-4 migrated faster toward the anode than CI-3 on polyacrylamide gel electrophoresis. Linkage tests showed that the Ict-E alleles were linked to the mw (minute wing) gene located on the twenty-second linkage group. Three point experiment indicated the locus of the Ict-E gene to be 8.6 units left of mw, which had previously been mapped at the starting position of the twenty-second linkage group. Consequently, Ict-E should be at the starting position instead of mw, and the arrangement of the 3 genes should be Ict-E (0,0)-or (8.9)-mw (25.2)
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