Final answer:
Affinity maturation is the mutational mechanism that results in the production of antibodies with higher affinity for antigens.
Step-by-step explanation:
The mutational mechanism that results in the production of antibodies that bind antigen with higher affinity is called affinity maturation. Affinity maturation occurs due to mutations in the immunoglobulin gene variable regions, resulting in B cells with slightly altered antigen-binding sites. When these B cells are re-exposed to the antigen, those capable of producing antibody with higher affinity antigen-binding sites will be stimulated to proliferate and produce more antibody. The mutational mechanism that results in the production of antibodies that bind antigen with higher affinity is called affinity maturation. Affinity maturation occurs due to mutations in the immunoglobulin gene variable regions, resulting in B cells with slightly altered antigen-binding sites.