what causes sickle cell anemia genetically
Sickle cell anemia is caused by a mutation in the gene that tells your body to make hemoglobin â the red, iron-rich compound that gives blood its red color. Hemoglobin allows red blood cells to carry oxygen from your lungs to all parts of your body.In sickle cell anemia, the abnormal hemoglobin causes red blood cells to become rigid, sticky and misshapen.The sickle cell gene is passed from generation to generation in a pattern of inheritance called autosomal recessive inheritance.emoglobin allows red blood cells to carry oxygen from your lungs to all parts of your body. In sickle cell anemia, the abnormal hemoglobin causes red blood cells to become rigid, sticky and misshapen.