Sickle Cell Essay

936 WordsDec 11, 20134 Pages
Bio 1. What is sickle cell disease? Sickle-cell disease (SCD), or sickle-cell anaemia (SCA) or drepanocytosis, is a hereditary blood disorder, characterized by red blood cells that assume an abnormal, rigid, sickle shape. 2. What causes sickle cell disease? The sickle cell disease occurs because of a mutation in the hemoglobin gene. 3. How is sickle cell inherited? Sickle-cell conditions have an autosomal recessive pattern of inheritance from parents. 4. What is the sickle cell trait? Sickle cell trait (or sicklemia) describes a condition in which a person has one abnormal allele of the hemoglobin beta gene (isheterozygous), but does not display the severe symptoms of sickle cell disease that occur in a person who has two copies of that allele (is homozygous). If you have sickle cell trait, you have inherited the gene for sickle cell disease. Sickle cell trait does not turn into sickle cell disease. If someone has sickle cell trait and his partner has sickle cell trait they may produce a child with sickle cell disease. There are about 2.5 million people in America with sickle cell trait. 5. If sickle cell trait is not an illness, why are people tested? Individuals with sickle-cell trait (heterozygotes) have a selective advantage in environments where malaria is present. Babies are tested to see if they have sickle cell disease. Teens and adults are tested mainly to see if they can have a baby with the disease. 6. What medical problems are caused by sickle cell disease? Lung tissue damage, pain episodes and stroke. The blockage of blood flow caused by sickled cells also causes damage to most organs including the spleen, kidneys and liver. 7. What are the signs and symptoms of sickle cell disease? Symptoms of sickle cell disease include: 1.Fatigue 2.Pain 3.Anemia 4.Swelling and inflammation of the joints 5.Blood

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