Additional file 7.

Nucleotide variation (π) along MITE sequence for each family. Nucleotide diversity π and its standard deviation were calculated by the program of DnaSP version 5.10. Then, the same program was used to define conserved and variable of the MITE sequences by sliding window analysis with both window size and step size 20 nucleotides. Windows with diversity equal or higher than average sequence diversity (π) + 2SD were defined as variable. Those with diversity less than average sequence diversity (π) - 2SD were considered as conserved.

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Han et al. BMC Genomics 2010 11:520   doi:10.1186/1471-2164-11-520