[OP5N5NxbYcG3iO]

"The DNA test designed by GeneSleuth Inc to detect the genetically engineered corn (MON810) will amplify two different alleles in hybrid Bt corn. Describe what element(s) makeup each allele and give their approximate size in base pairs(bp)"

Anyone got any idea what the answer would be? My $120 textbook doesn't seem to have it, stupid, I know.