In what stage of the scientific method is a hypothesis tested

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

Diagram of the evolution of land plants?

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