Explanation:
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I
Can you be more specific with the question. Are you talking about DNA coding with complementary bases?
It is intended to increase immunity against that antigen back to protective levels, after memory against that antigen has declined through time.
