2<span>. the amount of G = the amount of C (pairing ratio of 1:1) c. the hydrogen bonds hold the molecule in its defintive shape. Complementary bases</span>
The two important features that characterize the adaptive immune system are specificity and memory.
The ability of the adaptive immune system to target specific pathogen and generate a tailored immune response against it is termed as specificity.
The ability of the adaptive immune system to remember the first exposure to the pathogen and thus, generate a heightened and more rapid immune response against the same pathogen on subsequent exposure is termed as memory.
