Question

Which is a characteristic of sickle-cell disease? A. abnormally sized red blood cells B. overproduction of hemoglobin C. higher oxygen concentration D. mutations in the hemoglobin gene

Answer 1

Hi there!

Just like it says in the name, sickle-cell disease is characterized by (D) mutations in the hemoglobin gene.

-AwesomeRepublic :)

Answer 2

Chronic anemia. The short life span of red blood cells in patients with SCD leads to chronic anemia (low red-cell count), which can cause extreme fatigue, shortness of breath, and delayed growth and development in children.

D. mutations in the hemoglobin gene.