We have briefly introduced the preliminary results of the DNA-induced hereditary varia-tion in silkworms. In this paper a comparison of mutagenesis of Attacus cynthia riciniby DNA of different sources is made. The characters of the transferred individuals and thehereditary characteristies are also described. We have briefly introduced the preliminary results of the DNA-induced hereditary varia- tion in silkworms. In this paper a comparison of mutagenesis of Attacus cynthia riciniby DNA of different sources is made. The characters of the transferred individuals and the hereditary characteristies are also described.