MEI population properties.

MEI diversity parameter θ was fit from the allele frequency spectra for the listed populations and element families. “all” is the full dataset of all three population groups. Insertion rates μ(θ) were derived from the θ values, assuming an effective population size of 10,000. The MEI population heterozygosities π were averaged over samples in the given population group. MEI insertion rates μ(π) were derived from Eq (2) relative to the SNP mutation rate. All insertion rates are listed in units of insertions per genome per generation.