Which Statement About Class Switching Is True

question 39

Multiple Choice

Which statement about class switching is true?

• A) The first class of immunoglobulin a B cell makes is IgG.
• B) A DNA deletion in the constant region produces an immunoglobulin with a different function.
• C) When class switching occurs, the class of the new immunoglobulin depends on which of the variable region genes is deleted.
• D) Class switching produces an immunoglobulin with different antigen specificity.
• E) A DNA deletion in the variable region allows a cell making IgA to switch to making IgM.

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