Table 4.

Changes in GC3 along Branches of Monocots

	All Genes	1 Exon Genes	2 Exons Genes	>2 Exons Genes
Mean GC3monocots	0.608	0.901	0.775	0.561
Mean tree length	1.133	1.122	1.216	1.124
ΔGC3monocots→BEP	−0.001	−0.034*	−0.025	0.007
ΔGC3monocots→PACCMAD	0.005	−0.037*	−0.031	0.012
ΔGC3monocots→banana	−0.093***	−0.154**	−0.124*	−0.086***
ΔGC3monocots→yam	−0.160***	−0.320***	−0.230***	−0.144***

Note.—The gene structure for the monocots ancestor was taken as that of rice. The gene structure of yam was taken as that of banana. *P-value < 0.05; **P-value $<{10}^{\mathrm{-}5}$; ***P-value $<{10}^{-10}$.