spontaneous mutations

• 自发突变

spontaneous mutations的用法和样例：

例句

1. Spontaneous and induced mutation occur with animals viruses.
   动物病毒的突变有自发突变和诱发突变。
2. C.He and Salvador Luria independently demonstrated the occurrence of spontaneous mutation in both bacteriophages and hosts.
   他和卢里亚分别证明了噬菌体及其寄主中的自发突变。