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Teach your students about gene transfer between bacterial strains. In 1 of the included strains of E. coli, the gene for antibiotic resistance for streptomycin is located on the chromosome. In the other, the gene for antibiotic resistance for ampicillin occurs as extrachromosomal plasmid DNA. Through the process of streaking the conjugated bacteria on 4 different types of antibiotic selective media, students determine which bacterial strain is the donor strain. Materials for 16–32 students.
IntermediateEasy to perform; requires some background knowledge.
Teach your students about gene transfer between bacterial strains. In 1 of the included strains of E. coli, the gene for antibiotic resistance for streptomycin is located on the chromosome. In the other, the gene for antibiotic resistance for ampicillin occurs as extrachromosomal plasmid DNA. Through the process of streaking the conjugated bacteria on 4 different types of antibiotic selective media, students determine which bacterial strain is the donor strain.
Note: Order the kit with the perishable materials included or with a voucher to request perishables later at your convenience. Contact us ore return the voucher to request delivery of perishable materials. Antibiotic solutions and cultures last 1 month when refrigerated.