showed a trendP = 0.093
According to the pairwise comparisons UMB wildtypes displayed a significantly lower number of entries into the light compartment than control wildtypes ( t = 2.696, P = 0.011) and UMB homozygotes showed a trend to enter the light compartment less often than control homozygotes ( t = 1.737, P = 0.093; Table 2 ).