10 DNA fragments: 100, 200, 300, 400, 500, 600, 700, 800, 900 and 1000bp. The intensity of the 500bp band is increased to yield an internal reference indicator 13 DNA fragments: 50, 100X2, 150, 200X2, 250, 300, 400, 500X2, 600, 700, 800, 900 and 1031bp: 13 DNA fragments: 50, 100, 150, 200, 250, 300,...