Table I.

P, S, and H phenotypic indices in the plasticity classes

Class	Number of Mutants	P Index	S Index	H Index
PhP1-2	6	3.00 ± 0.00	0.00 ± 0.00	1.83 ± 1.13
PhP3	30	1.77 ± 0.43	0.90 ± 1.13	1.28 ± 0.82
PhP4	25	0.84 ± 0.37	0.16 ± 0.47	0.48 ± 0.70
Suc1-3	17	1.59 ± 0.62	1.82 ± 0.81	1.56 ± 0.58
SucN	44	1.48 ± 0.82	0.00 ± 0.00	0.80 ± 0.94
Hyp1–4	31	1.77 ± 0.76	0.90 ± 1.14	1.71 ± 0.68
Hyp5	9	1.44 ± 0.53	0.33 ± 0.50	0.94 ± 0.17
HypN	21	1.14 ± 1.14	0.00 ± 0.00	0.00 ± 0.00

The P, S, and H indices are estimates of the deviations from the corresponding wild-type plasticity response to photoperiod, Suc, and light/dark (see Figs. 4 and 5 and “Materials and Methods”). By definition, wild-type P, S, and H indices are 0. Mean values and sds are indicated for each class.