What Process Is Probably Responsible for the Origin of the Three

question 58

Multiple Choice

What process is probably responsible for the origin of the three parts of the constant portion of the IgG heavy chain?

• A)inversion of an ancestral gene coding for an Ig unit about 110 amino acids long
• B)duplication of an ancestral gene coding for an Ig unit about 110 amino acids long
• C)deletion of an ancestral gene coding for an Ig unit about 110 amino acids long
• D)point mutation of an ancestral gene coding for an Ig unit about 110 amino acids long
• E)nonsense mutation of an ancestral gene coding for an Ig unit about 110 amino acids long

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