highly significantp < 10 −26
Figure 5 D illustrates the large degree of overlap between wild-type LD and wild-type DD oscillators, a highly significant (Fisher's exact test p < 10 −26 ) and unsurprising result, considering the extensive program of circadian expression that is detected in combined wild-type LD + DD data ( Figures 2 A, 2 C, 3 A, and 5A).