Table 2.

K_a/K_s analysis and estimated divergence time for TaTB1 gene pairs in wheat and its donor species.

Paralogous pairs	Origin	Ka	Ks	Ka/Ks	Divergence time (mya)
TaTB1-1-A-TaTB1-2-A	AABBDD	0.422331	1.76758	0.238932	0.718717
TaTB1-1-B-TaTB1-3-B	AABBDD	0.39819	1.42517	0.279399	0.61836
TaTB1-1-D-TaTB1-4-D	AABBDD	0.391273	1.89824	0.206124	0.710809
TtTB1-1-A-TtTB1-2-A	AABB	0.389092	1.96989	0.19752	0.71316
AetTB1-1-AetTB1-2	DD	0.366917	2.7072	0.135534	0.839375
TuTB1-1-TuTB1-2	AA	0.366908	1.54729	0.23713	0.615564