Explanation:
After repeated stimulation by antigen, B cells can make antibodies that bind their antigen with much higher affinity a process called affinity maturation. ... Thus, antigen stimulation greatly increases the antibody arsenal. Antibodies are proteins, and proteins are encoded by genes.
if you are aking if that is true then yes but there are also secondary, primary consumers... decomposers... detritivores
I believe it is called evolution and you can see this with a genetics tree
