If a person has two alleles of the sickle cell anaemia gene, the person

Assessment: WAEC SSCE - Biology - 2011 (Objective) Subject: Biology

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If a person has two alleles of the sickle cell anaemia gene, the person
Answer Details
If a person has two alleles of the sickle cell anaemia gene, the person has the disease. Sickle cell anaemia is an autosomal recessive genetic disorder, which means that two copies of the abnormal gene are required to have the disease. A person with one abnormal and one normal gene is a carrier and does not have the disease but can pass the abnormal gene to their offspring. A person with two abnormal genes has the disease and may experience symptoms such as pain, fatigue, and anemia.
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