An inherited form of anemia in which a defective hemoglobin chain causes microcytic, hypochromic, short-lived red blood cells is ________.

Hypochromic

Describes blood cells that have less color than normal, usually due to a deficiency in hemoglobin, often associated with anemia.

Microcytic

Relates to red blood cells that are smaller than normal, often associated with iron-deficiency anemia.

Hemoglobin

A protein in red blood cells responsible for carrying oxygen from the lungs to the rest of the body.