天蚕是一种珍贵的野生吐丝昆虫，由于其丝的独特色泽和质地，被称为“钻石纤维”而倍受人们的青睐。近年来对天蚕生物学和人工驯养技术颇有研究[1]，人们还试图通过基因工程的方法来利用这一珍贵的遗传资源[2]。Tamura[3]成功地克隆了天蚕丝秦基因，发表了该基因的部分核苷酸序 Silkworm is a precious wild silkworm insects, because of its unique silk color and texture, known as the “diamond fiber” and much of people’s favor. In recent years, many studies have been conducted on the biology and artificial domestication of silkworm, [1] and people are also trying to utilize this precious genetic resource through genetic engineering [2]. Tamura [3] successfully cloned Qin silk Qin gene, published a partial nucleotide sequence of the gene