If you could analyze, at the molecular level, a plasma cell making IgE antibody, you would find which of the following:. A. A DNA sequence for V, D, J genes translocated near the Ce DNA exon
B. mRNA specific for either kappa or lambda light chains
C. DNA specific for both kappa and lambda light chains
D. mRNA specific for m chains
E. A DNA sequence coding for the T-cell receptor for antigen

A.  A DNA sequence for V,D, J genes translocated near the Ce DNA exon

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the answer to your question is tooth decay.