<prompt> Antibody diversity is due to -Gene rearrangementGene translocationAntigenic variationCD40 molecules  <response>: The large and diverse population of antibody paratope is generated by random recombination events of a set of gene segments that encode different antigen-binding sites or paratopes, followed by random mutations in this area of the antibody gene, which create fuher diversity Ref: Ananthanarayan Parkers textbook of microbiology 9th edition pg: 94-97 