TABLE 1.

K_a/K_s calculation and divergence time of the duplicated FcPLCP gene pairs.

Duplicated pair	Ka	Ks	Ka/Ks	Divergence time (MYA)
FcRD19A/FcRD19B	0.4155	0.1305	3.1840	9.32
FcRD19B/FcRD19C	1.0683	0.8398	1.2721	59.98
FcRD21A/FcRD21B	0.1051	0.1133	0.9277	8.09
FcRD21A/FcRD21C	0.1087	0.1908	0.5697	13.63
FcRD21B/FcRD21C	0.0840	0.1127	0.7459	8.05
FcSAG12F/FcSAG12G	0.0072	0.0246	0.2933	1.76

K_a/K_s < 1, negative selection; K_a/K_s = 1, neutral selection; K_a/K_s > 1, positive selection; MYA, million years ago.