Sliding-window analysis of nucleotide polymorphism (Pi). For the sliding-window analysis in O. sativa (190 accessions) and O. rufipogon (19 accessions), Pi was calculated for segments of 350 bp at 70 bp intervals. The black bar shows the exon of OsAMT1;1.
Ding et al. BMC Evolutionary Biology 2011 11:61 doi:10.1186/1471-2148-11-61