People wit sickle-cell anaemia have haemoglobin

Assessment: JAMB UTME - Biology - 1994 Subject: Biology

Question 1 Report

People wit sickle-cell anaemia have haemoglobin
Answer Details
People with sickle-cell anemia have hemoglobin S and are homozygous recessive. Sickle-cell anemia is an autosomal recessive genetic disorder caused by a mutation in the HBB gene that produces hemoglobin S. When an individual inherits two copies of the mutated gene (one from each parent), they have sickle-cell anemia. Individuals who are heterozygous (carrying one normal and one mutated gene) are carriers of the disorder but do not have the disease itself.

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