Lab Exercise 28 PDF

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Lab Report 28 Name: __Michele Glantz__ Date: ___5/23/19_______

Gene Transfer: Transformation Your Results and Observations Draw or use a mobile device to photograph your results.

“DNA+” plate

“no DNA” plate

Count the number of colonies on the “DNA+” and “no DNA” plates.

Number of colonies

“DNA+” plate N/A

“No DNA” plate N/A

Interpretation and Questions

1. What are competent cells? Competent cells are able to take in genetic material across their membrane.

Lab Report 28 2. Explain why the presence of antibiotics in the growth medium is important to the interpretation of the results. The presence of antibiotics in the growth medium is important for interpretation because it will show what bacteria is resistant to certain antibiotics, and it helps to allow health care providers pick the correct antibitotics to treat certain bacteria’s.

3. The production of recombinant human insulin described in the Case File is a positive application of horizontal gene transfer. What negative situation (from the point of view of humans) has resulted from horizontal gene transfer? The use of recombinant enzymes as a result from horizontal gene transfer in foods may affect HGT in the human gut, or, if the changed microbial/microbial product profile could affect human health....