DNA selection

200,400,600,700,800,900,1000,1200200,400,600,700,800 200,400,600,700,800,900,1000,1200200,400,600,700,800,900,1000,1200 200,400,600,700,800,900,1000,1200200,400,600,700,800,900,1000,1200 200,400,600,700,800,900,1000,1200200,400,600,700,800,900 200,400,600,700,800,900,1000,1200200,400,600,700,800,900 200,400,600,700,800,900,1000,1200200,400,600,700,800,900