Suppose That a Person Has a Mutation in a Gene

question 53

Multiple Choice

Suppose that a person has a mutation in a gene that encodes an enzyme responsible for the production of histamine. In this person, mast cells cannot produce and secrete histamine. Which of the following outcomes is most likely to happen if an injury occurs?

• A) Macrophages will not be able to secrete signaling molecules.
• B) Neutrophils will not be attracted to the injury site.
• C) Neutrophils will not be able to phagocytose pathogens at the injury site.
• D) Macrophages will not be attracted to the injury site.

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