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Human Genetics and Genetic Disorders
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There is more than one hemoglobin gene. The amino acid sequences of the globin proteins in hemoglobin usually differ between species. Which of the following diseases in human beings is caused by the mutation in the haemoglobin gene?
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A
Sickle-cell disease
💡 Explanation:
Sickle-cell disease is a hereditary blood disorder, characterised by red blood cells that assume an abnormal, rigid, sickle shape. Sickling decreases the cells' flexibility and results in a risk of various life-threatening complications. This sickling occurs because of a mutation in the haemoglobin gene.