Table 1.

Correlations Between Duplication and Flux by Gene Family

	All Flux Values		Excluding Null-Fluxa
	rb	Pc	r	P
Duplications per gene family
All conditions	0.245	<10−15	0.336	<10−15
C3 leaves	0.218	<10−15	0.328	<10−15
C4 leaves	0.176	<10−8	0.218	<10−4
Roots	0.223	<10−15	0.359	<10−15
Duplications per species per gene familyd
All conditions	0.227	<10−15	0.306	<10−15
C3 leaves	0.203	<10−15	0.272	<10−14
C4 leaves	0.163	<10−7	0.206	<10−4
Roots	0.211	<10−15	0.342	<10−15

^aFlux values equaling 0 can have confounding biological and computational meanings.

^bSpearman's r.

^cCorrelations and statistical significance calculated in R.

^dNumber of duplication events per gene family divided by the number of species in that family.