Common chemical mutagen treatment methods include dipping method ( ), application method, or drip method.

EMS is a commonly used chemical mutagen for the application of mutation breeding. The full name of this chemical substance is (). A: Diethyl sulfate B: Ethyl methanesulfonate C: Ethylene imine D: Nitrosoethyl urethane

关于DNA突变，描述最为正确的是 A: X射线属于诱变剂(mutagen),而Y射线是安全的中的飞业量郑中始查对 B: 某些抗生素就是化学修饰诱变剂 C: 病毒基因组可打断人类基因的编码区，但不影响基因的表达 D: 碱基类似物(base analogue)化学品常导致DNA序列的错读(misreading) E: 正常代谢产物可保护DNA不发生突变