In the F 3 population an individual with a new character that neither parent had was discovered - translucent.
用60 Co -γ射线照射家蚕羽化前 2～ 3日雌蛹 ,羽化后与未经照射的雄蛾交配制种 ,于F3 群体中发现了一种双亲没有的新性状个体———高度油蚕。
It is,therefore, inferred as a new translucent mutant, named as Jc translucence which is marke.
经遗传和连锁分析表明：该油蚕性状受一对隐性基因控制，基因位于第5连锁群，且与该连锁群的其它油蚕基因不同，是一个新的油蚕突变，命名为Jc油蚕（JcTranslucent），基因记号：ojc。