JAMB Biology 2011 Objective — Question 54
Question 54 of 60 from the Joint Admissions and Matriculation Board (JAMB) Biology 2011 Objective paper, with the correct answer and a full explanation.
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If a person has two alleles of the sickle cell anaemia gene, the person is
- A. A. a heterozygous carrier of the disease
- B. B. immune to the disease and cannot pass it on to an offspring
- C. C. a sufferer of the diseaseCorrect
- D. D. probably of Asian ancestry
Explanation
A person with two alleles of the sickle cell gene (homozygous) is a sufferer of the disease; a person with just one allele is a carrier.
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