Figure 1.
Experimental design to identify genes associated with sperm loss and aging. Studying the wild-type worm alone would measure time- and sperm-related changes at the same time, without allowing us to separate these changes. Studying the wild-type worm and a fog-2(lf) mutant would enable us to measure sperm-related changes but not time-related changes. By mixing both designs, we can measure and separate both modules.