You have learned that different antibody isotypes activate distinct immune mechanisms. For example, IgE activates mast cells, while IgG activates ADCC. The heavy chain isotypes differ structurally in the constant regions. These structural differences lead to functional differences. What is NOT one of the structural or functional differences between different antibody isotypes

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.