MCAT Question of the Day
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    Q:

    		 In sickle cell disease, homozygous individuals present with the disease (production of abnormal hemoglobin) while heterozygotes are almost invariably asymptomatic, although they will produce normal as well as abnormal hemoglobin. This suggests which of the following about sickle cell disease?
    		 

    A

    		 Sickle cell disease operates under complete dominance.

    B

    		 Sickle cell disease operates under incomplete dominance.

    C

    		 Sickle cell disease operates under codominance.

    D

    		 Sickle cell disease is a sex-linked trait.



    Mendelian Concepts |
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