The Mutation That Became the Recessive Characteristic for Sickle-Cell Anemia

question 84

Multiple Choice

The mutation that became the recessive characteristic for sickle-cell anemia is adaptive in:

• A) malaria-prevalent environments
• B) non-African Americans only
• C) African Americans
• D) no known environments and, as a recessive characteristic, is likely to die out

---

Definitions:

Antibody-Mediated Immunity

A component of the adaptive immune system where B cells produce antibodies to identify and neutralize foreign substances like bacteria and viruses.

Cell-Mediated Immunity

A type of immunity where T lymphocytes directly attack and destroy infected or abnormal cells.

Red Bone Marrow

A type of marrow found in some bones that produces red blood cells, white blood cells, and platelets.

Antibody-Mediated Immunity

A aspect of the immune response where B cells produce antibodies that are specific to antigens of pathogens, leading to their neutralization or destruction.