JAMB Biology 2019 Objective — Question 32
Question 32 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2019 Objective paper, with the correct answer and a full explanation.
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If two parents are sickle cell carriers then their genotypes would be
- A. HbᴬHbᴬ and HbᴬHbᴬ
- B. HbˢHbˢ and HbˢHbˢ
- C. HbᴬHbᴬ and HbˢHbˢ
- D. HbᴬHbˢ and HbᴬHbˢCorrect
Explanation
A sufferer of sickle cell disease/trait has genotype HbᴬHbˢ (carrier); a normal person has HbᴬHbᴬ. If both parents are carriers, both have genotype HbᴬHbˢ.
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