BacTran6 - Escherichia coli E coli • Single large...

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7/7/10 2. Bacterial Transformation E. coli - not resistant to antibiotics. Bacterial cells are competent, i.e., they are ready to take up extraneous plasmids. Plasmids - with a gene giving bacteria resistance to ampicillin . Once plasmids are internalized, their genes are expressed by the bacterium - antibiotic
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Unformatted text preview: 7/7/10 Escherichia coli ( E. coli ) • Single, large double-stranded DNA molecule in chromosome • 4.2 million base pairs • Supercoiled • Contains approximately 3,000-5,000 genes. • Human cell has 23 pairs of chromosomes, ca. 7/7/10 E. coli DNA...
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BacTran6 - Escherichia coli E coli • Single large...

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