MCAT Question of the Day
    •

    Q:

    		 Which of the following genes would be expected to be found across the widest array of different organisms?
    		 

    A

    		 glucose membrane transporter

    B

    		 sodium-potassium pump

    C

    		 dopamine receptor

    D

    		 keratin



    Eukaryotic Tissues | Evolution |
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