An example of mutualism is
mold growth nucleotides composing polymers occurs over a wide range viruses inherited antigens + antibody parasites domestication of animals communication
A B C D E F G H
Domestication of animals is an example of a symbiotic relationship.
Domestication of animals is an example of mutualism 
An example of mutualism is (A) mold growth (B) nucleotides composing polymers (C) occurs over a wide range (D) viruses (E) inherited antigens + antibody (F) parasites (G) domestication of animals (H) communication