Mutations a) are always harmful b) can be beneficial c) are changes in dna d) usually occurs during dna replication e) causes evolution change

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen