Table 1 The sources of the eukaryotic genomes analyzed in this study.

A. thaliana

http://ftp.ncbi.nih.gov

n/a

C. elegans

http://www.ucsc.edu

ce2

D. melanogaster

http://www.ucsc.edu

dm2

H. sapiens

http://www.ensembl.org

38

M. musculus

http://www.ucsc.edu

mm8

S. cerevisiae

http://www.ucsc.edu

SacCer1