Which of the following should be the same in identical twins?
A) the set of antibodies produced
B) the set of major histocompatibility (MHC) molecules produced
C) the set of T cell antigen receptors produced
D) the susceptibility to a particular virus

Question

Quizplus · Accepted Answer

Identical twins have the same DNA, so they should produce the same set of major histocompatibility (MHC) molecules. MHC molecules are important for immune recognition and are highly polymorphic, meaning there are many different versions of them in the population. However, identical twins have the same version of each gene, so they should produce the same set of MHC molecules. The other options, such as the set of antibodies produced and the susceptibility to a particular virus, can vary between individuals even if they are genetically identical. The set of T cell antigen receptors produced can also vary due to somatic recombination and other mechanisms of generating diversity in the immune system.

Which of the Following Should Be the Same in Identical