Table 6.

Comparative analyses across vertebrates of the 5' and 3'-ends of Rag1

	t	df	p-value
Tamura-Nei nucleotide distances	4.8294	22	7.969e-05*
Number of variable nucleotide sites	5.6585	22	1.087e-05*
AA p-distances	3.3504	4	0.02856*
Number of variable aa	4.0853	4	0.01503*

Comparative analyses across vertebrates of the two parts of Rag1, the 5' and 3'-ends. Number of sequences used for each monophyletic vertebrate lineage: Amphibia = 7; Aves = 119; Crocodylia = 13; Lepidosauria = 80; Mammalia = 37; Testudines = 24. "df" indicates the degree of freedom. * indicates the significant p-value (p < 0.05).