Chromosome polymorphism of teosinte.
Florida teosinte from Honduras and Guanajuato teosinte have most of their knobs internally located and a common inversion in the short arm of chromosome 8. Teosintes from northern Guatemala, Huixta and Monajil, have all their knobs terminally located and do not have any inversions. Therefore, Florida teosinte from Honduras appears to be phylogenetically closer to Guanajuato teosinte than it is to Guatemalan teosintes.--The presence of B chromosomes and an In 8 in Guanajuato teosinte and Florida teosinte from Honduras may constitute evidence of introgression between maize and teosinte.
Ting
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Department of Biology, Boston College, Chestnut Hill, Massachusetts 02167.