You Have Performed the Following Mating Experiment Using Hfr and F-Strains

question 78

Multiple Choice

You have performed the following mating experiment using Hfr and F-strains of Escherichia coli: Hfr (thr⁺ leu⁺ gal⁺ strˢ) × F⁻ (thr⁻ leu⁻ gal⁻ strʳ) . Which of the following selective media would you use to score recombinant colonies?

• A) minimal medium
• B) minimal medium + streptomycin
• C) minimal medium + threonine
• D) minimal medium + streptomycin + threonine

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Definitions:

Coracoid Process

A small hook-like structure on the shoulder blade that serves as an attachment point for muscles and ligaments.

Medial Malleolus

The bony prominence on the inner side of the ankle, formed by the lower end of the tibia.

Tibia

The larger and stronger of the two bones in the lower leg, commonly referred to as the shinbone.

Fibula

A thin, elongated bone situated on the outer aspect of the tibia, within the lower portion of the leg.