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(A-D) Maize landraces from Mesoamerica (MA) or South America (SA). (E-H) Highland teosinte Z. mays ssp. mexicana. Only teosinte populations above 2000m that do not show admixture (see text) are included. (A,E) total genome size, (B,F) total transposable element content, (C,G) 180bp knob repeat content, (D,H) TR1 knob repeat content. Dashed lines represent the best fit linear regression.
