Amplification of nifH and nodA gene in Rhizobium sp. resulted multiple bands, what is an efficient way to get single band?

Primers USED nifH1 Forward  CGTTTTACGGCAAGGGCGGTATCGGCAnifH2 Reverse  TCCTCCAGCTCCTCCATGGTGATCGG nodA1  forward TGCRGTGGAARNTRNNCTGGGAAA nodA2  reverse GGNCCGTCRTCRAAWGTCARGTA

19 February 2016 2,947 3 View