rains of E. coli are isolated. They may be mutated on the ara, mal, leu and pro genes, only these 4 genes. The 5 strains (E1 to E5) are tested on 5 different media and onies are observed the next day. Rich Media (Lb) ES E4 ● E1 E3 E2Ⓡ MM + Mal+Leu E5 E4 X E1 E3 X E5 X MM + Mal E4 E1 E3 X E2 E5 E4 . MM + Mal+Leu +Pro E1 E3 E5 E2 MM + Ara E4 X X E1 E3 E2 X X onies are indicated by a black dot, absence of a colony is indicated by a cross. 1) Determine the genotypes of the 5 bacterial strains (E1 – E5)

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