Figure 2.

Mature Root Hairs of Double Mutant Plants with Epistatic Phenotypes.

Root hairs of wild-type and single mutant plants are shown for comparison. The rhd6 rhd2-2 double mutant is mostly bald, as is the rhd6 single mutant. This is an example of epistasis, where the rhd6 mutation is epistatic to rhd2-2. Other results shown here demonstrate that shv1-1 is epistatic to both shv2-1 and shv3 and that shv2-1 is epistatic to cen3-2.