Table 2.

Estimated Ages of the Observed Secondary Peaks and the Potato-Tomato and Soybean-M. truncatula Speciation Events

Species	Mode Peak of Paralog Ks	Estimated Age in Myra
Maize	0.15 to 0.20	11.5 to 15.4
G. hirsutum and G. arboreum	0.40 to 0.45	13.3 to 15.0
Potato and tomato	0.55 to 0.70	18.3 to 23.3
Soybean young peak	0.10 to 0.15	3.3 to 5.0
Soybean old peak	0.45 to 0.50	15.5 to 16.7
M. truncatula young peak	0.25 to 0.30	8.3 to 10.0
M. truncatula old peak	0.65 to 0.70	21.6 to 23.3
Arabidopsis peak of duplicates formed by polyploidy	0.75 to 0.80	25.0 to 26.7
Arabidopsis peak of tandem duplicates	0.30 to 0.35	10.0 to 11.7
Lineage Separation Events	Mode Peak of Ortholog Ks	Estimated Age in Myr
Potato-tomato	0.05 to 0.10	1.6 to 3.3
Soybean-M. truncatula	0.40 to 0.45	13.3 to 15.0

^aMyr, millions of years.