You Work for a Biotechnology Company That Uses Streptomyces Strains

question 64

Multiple Choice

You work for a biotechnology company that uses Streptomyces strains to produce pharmaceutical products. A phage has infected and killed some of your Streptomyces strains during production, resulting in dramatically decreased yields. To protect the strains from infection you propose to

• A) introduce gene transfer agents into the Streptomyces cultures to transfer antibiotic resistance genes into your Streptomyces strains.
• B) design and insert CRISPR spacer sequences into the genomes of your strains that are complementary to the genomes of the phages that are infecting the cultures.
• C) infect the Streptomyces strains with a helper phage that will help the strains resist infection.
• D) transform the Streptomyces strains with plasmids encoding antibody proteins that will protect them from phage infection.

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