Sperm activation is a process in which the sperm differentiate to gain motility and fertilization competency. Sperm activation is tightly regulated. Precocious activation or failure in activation can lead to infertility in male worms. Two genes act in a switch regulation developmental pathway to regulate sperm activation in the worm. Loss$-$of$-$function of spe$-6$ leads to precocious sperm activation whereas loss$-$of$-$function of spe$-43$ leads to failed activation. If spe$-43$ acts upstream of spe$-6$ to negatively regulate spe$-6$ activity, what is the double mutant phenotype of spe$-6$; spe$-43?$