Question

Formation of a large number of effector cells against a particular antigen is called

• A. Mass replication
• B. Clonal selection
• C. Mass selection
• D. Pure line selection

Answer 1

The correct option is B Clonal selection

The entry of antigen causes the selection of only one of the types of lymphocyte. The one that has the binding site which matches the antigen. This results in this lymphocytes cloning itself into large numbers of this same lymphocytes, so it produces the antibody that matches the antigen. This selection means that all the lymphocytes that are produced in the responses are all specific only to that antigen.

So the correct answer is 'Clonal selection'.