Which of the Following Is an Example of Phase Variation

question 63

Multiple Choice

Which of the following is an example of phase variation?

• A) N. gonorrhoeae expressing different types of pilin protein.
• B) Influenza virus expressing variations of glycoprotein HA and NA spikes.
• C) S. pyogenes producing a capsule of hyaluronic acid, which is also a host component.
• D) E. coli producing pili for attachment to epithelial cells.
• E) These are all examples of phase variation.

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