"An additional double mutant was constructed between
unc-52(
ev620) and
unc-6(
ev400), and in this case also, the penetrance of defects was greater than in
unc-6(
ev400) alone (Table 1).
unc-6(
ev400) alone exhibited 48% anterior and 83% posterior DTC defects (n = 122). The double mutant
unc-52(
ev620);
unc-6(
ev400) exhibited 79% anterior (P < 0.001) and 91% posterior (P < 0.05) DTC defects (n = 100)."