Table 2.

Normalized distances and insertion costs for three comparisons.

	without missing homologs			missing homologs replaced			change
Comparison	n	D	D/n	n	D	D/n	Δn	Δ D
Populusb -Vitis [7]	2104	1092	0.52	6144	2545	0.41	4040	1453	0.36
Populusb -Carica [2]	2590	1461	0.56	7222	3466	0.48	4632	2005	0.43
Ricinusc-Vitis	13694	8283	0.60	18300	9931	0.54	4606	1682	0.37
R.-V. correcteda	13694	7715	0.56	18300	9365	0.51	4606	1684	0.37

a: contains corrections to distance due to scaffold fusions. b: Populus comparisons include rearrangements during the re-diploidization of the ancestral tetraploid. c: some missing homologs in the Ricinus comparisons are simply not sequenced, while in the other comparisons, missing homologs are virtually all absent from the genome.