People with the Disease Known as Sickle Cell Anemia Are

question 3

Multiple Choice

People with the disease known as sickle cell anemia are often better able to survive malaria. What is the cause of this?

• A) balanced polymorphism
• B) heterozygote advantage
• C) disruptive selection
• D) stabilizing selection

---

Definitions:

Hyperopia

A vision condition where distant objects are seen more clearly than near objects, often referred to as farsightedness.

Farsightedness

A common vision condition where distant objects are seen more clearly than close ones, also known as hyperopia.

Tonometer

An instrument used to measure the pressure inside the eye, important for diagnosing and monitoring glaucoma.

Intraocular Pressure

The fluid pressure inside the eye, critical for maintaining eye shape and proper vision; abnormalities can indicate glaucoma.