I believe that the most common antibody switch is from IgM to IgG.
Class switching occurs by a mechanism called the class switch recombination binding. It is a biological mechanism that allows the class of antibody produced by an activated B cell to change during a process known as isotype or class switching. The mechanism changes a B cell's production of antibodies from one form to another, such as from the isotype IgM to the isotype IgG.
Answer:
the Answer is A
because organic compound is made up of living things
Natural Selection could produce new variations of body parts.
Answer:
The answer is A. water, carbon dioxide, and energy.
Explanation: