Answer:
overreacts to an antigen
Explanation:
Allergies to substances are as a result of immunological dysfunction.
An anatomist studies the parts of the body by looking at the physical components of the that body part and identifying its functions. A physiologist looks at the mechanism at how a body part functions. The components of the eye according to an anatomist would be based on the different physical components of the eye while to a physiologist, the components would be based on the functions.
In a punnett square a capital letter stand for a <u><em>dominant</em></u> allelle.