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Week 4: Why are so many bacteria resistant to antibiotics?

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This figure shows a schematic representation of the process of transformation. Bacterial cells are represented as before by a blue oval surrounded by a brown cell wall. Bacterial chromosomal DNA is represented as a purple circle. DNA fragments are represented as pink lines. In the first image DNA fragments appear stuck to the outside of the bacterial cell. There is an arrow to the next image which shows a bacterial cell containing one DNA fragment. There is an arrow from this cell to a final bacterial cell in which the pink DNA fragment is incorporated into the purple chromosomal DNA.