Table 3.

Fitting of the global alignment scores aligned with constant gap penalty. All sequences were generated with the LAC approach with different sequence lengths and the alignments were carried out with the PAM250 matrix and a constant gap penalty of -10. Global alignment scores were fitted to the gamma and normal distribution respectively.

sequence	fitted gamma distribution						fitted normal distribution		score
length	γ	λ	μ	d.f.	χ2	p-value	d.f.	χ2	mean	variance
50aa	156.20	0.90	-201.46	10	9.19	0.51	11	14.56	-25.97	197.16
100aa	113.08	0.58	-237.29	10	9.38	0.49	11	29.91	-41.55	338.82
200aa	341.64	0.78	-504.83	11	10.78	0.45	12	20.40	-68.55	557.15
300aa	110.45	0.39	-376.02	10	9.86	0.45	11	18.42	-91.93	730.71
400aa	110.74	0.35	-431.71	11	9.05	0.59	12	19.41	-114.46	908.81
500aa	158.16	0.38	-551.37	12	14.69	0.26	13	15.67	-136.15	1090.13
600aa	118.10	0.31	-537.57	11	11.67	0.39	12	30.80	-157.00	1226.38
700aa	118.40	0.29	-582.49	10	9.85	0.45	11	12.88	-178.59	1377.88
800aa	129.03	0.30	-635.51	11	7.47	0.74	12	33.63	-198.74	1478.53
1200aa	131.35	0.25	-798.05	9	11.07	0.26	10	12.83	-278.65	2053.78