Which statement about the specific immune response is FALSE? O Each T or B cell has antigen receptors for only one specific antigen.
O Tand B cells recognize antigens by using antibodies bound to their surface membranes.
O Unique antigen receptors are created by genetic recombination.
O Antigens must be presented by an MHC molecule for T and B cells to recognize them.
O All cells express MHC-I molecules, but only antigen-presenting cells express MHC-Il molecules.

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///

"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."