back mutation rate回复突变率
reverse mutation back mutation回复突变
back mutation reverse mutation回复突变
true back mutation真回复突变
back mutation method回复突变法
back or reverse mutation回复突变
hercynine synthesis effect back mutation组氨酸合成缺陷型回复突变
back mutation or reverse mutation回复突变
N（名词） the reversion of a mutant to the original phenotype 回复突变 [genetics]