Dr.Gantar is studying leopard gecko coloration.  She found t…

Dr.Gantar is studying leopard gecko coloration.  She found three genes that appear to determine some coloration and are linked.  Based on the data below, the middle gene is .  st = stripes y = yellow patches sp = spots F1 Testcross Progeny Phenotype Number spotted (+ + sp) 613 striped, yellow (st y +) 611 yellow (+ y +) 231 striped, spotted (st + sp) 217 striped (st + +) 131 yellow, spotted (+ y sp) 125 striped, yellow, spotted (st y sp) 6 wildtype (+ + +) 7 Total 1941