Answer: Sickle cell anemia
The formation of abnormal hemoglobin that distorts certain blood cells is a condition called sickle cell anemia. It has a crescent shape resembling to a sickle that makes it sticky, rigid, and prone to being trapped in small vessels that blocks the blood from reaching to different parts of the body.
In addition, this is a genetic disease of the red blood cells with an autosomal recessive condition and you need to have two copies of the gene to have the disease.