The genetic disorder caused by a single amino acid error in hemoglobin is called:

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Sickle cell anemia is caused by a single amino acid substitution (glutamic acid to valine) in the hemoglobin protein. This causes the red blood cells to become sickle-shaped and leads to various health problems. Phenylketonuria (PKU) is caused by a deficiency in the enzyme phenylalanine hydroxylase, leading to toxic levels of the amino acid phenylalanine. Cystic fibrosis is caused by mutations in the CFTR gene, resulting in the production of thick and sticky mucus in the lungs and other organs. Marasmus is a severe form of malnutrition, typically due to inadequate intake of both calories and protein. None of these disorders are caused by a single amino acid error in hemoglobin.

The Genetic Disorder Caused by a Single Amino Acid Error